Which of the following types of instruments can be used for both AC and DC measurement?
A Induction-type instrument B Moving-iron instrument C Thermocouple instrument D Moving-coil instrument Correct answer: B. Moving-iron instrument
A vibrating-reed frequency meter has reeds tuned from 45 Hz to 55 Hz in 1 Hz steps. If a 50 Hz frequency is applied, which reed will vibrate with maximum amplitude?
A The reed tuned to 50 Hz B The reed tuned to 45 Hz C The reed tuned to 48 Hz D The reed tuned to 53 Hz Correct answer: A. The reed tuned to 50 Hz
Which component in a nuclear reactor absorbs excess neutrons to control the fission process and shut down the reactor?
A Fuel rods B Control rods C Moderator D Coolant pumps Correct answer: B. Control rods
Which is the correct equation for deflecting torque in a moving-iron instrument?
A T_d = (1/2)(dL/dθ) B T_d = (1/2) I² (dL/dθ) C T_d = (1/2) I (dL/dθ) D T_d = (1/2) K (dL/dθ) Correct answer: B. T_d = (1/2) I² (dL/dθ)
If the length of a coil is increased, what is the effect on its inductance?
A Remains unchanged B Increases C Becomes infinite D Decreases Correct answer: D. Decreases
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A two-winding transformer operates at maximum efficiency when ____________.
A voltage regulation is minimum B hysteresis loss = eddy-current loss C copper loss = iron loss D primary resistance = secondary resistance Correct answer: C. copper loss = iron loss
What is the thermochemical decomposition of biomass at high temperature in the absence of oxygen called?
A Pyrolysis B Gasification C Digestion D Combustion Correct answer: A. Pyrolysis
What is the total impedance of a series R-L-C circuit connected to an AC supply?
A Z = R + jX_L Ω B Z = R + j(X_L − X_C) Ω C Z = R − jX_C Ω D Z = j(X_L + X_C) Ω Correct answer: B. Z = R + j(X_L − X_C) Ω
Which relay is used for transmission line protection based on impedance measurement?
A Overcurrent relay B Distance relay C Earth fault relay D Thermal relay Correct answer: B. Distance relay
A Schottky diode has __________ recovery time and __________ forward-voltage drop.
A very fast, low B very slow, low C very slow, high D very fast, high Correct answer: A. very fast, low
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Which electrical property distinguishes a PVC conduit from a metallic conduit?
A Metallic conduit cannot be used indoors. B Metallic conduit is lighter than PVC conduit. C PVC conduit does not conduct electricity. D PVC conduit is difficult to bend on site. Correct answer: C. PVC conduit does not conduct electricity.
To measure mutual inductance using a Carey Foster bridge, which of the following is required?
A Two inductors with mutual coupling B A DC power source C A capacitor in each arm D A transformer Correct answer: A. Two inductors with mutual coupling
Which of the following characteristics distinguishes a directional relay from a non-directional relay?
A A directional relay operates only at high voltage. B A directional relay responds to changes in frequency. C A directional relay responds to the direction of current flow. D A directional relay operates completely independently of current magnitude. Correct answer: C. A directional relay responds to the direction of current flow.
For stable operation, what is the ratio of full-load torque to maximum torque usually in a 3-phase induction motor?
A Twice the slip B Greater than 1 C Less than 1 D Equal to 1 Correct answer: C. Less than 1
Which of the following is NOT a desirable property of a conductor material used in power transmission?
A High weight B Low cost C High tensile strength D High electrical conductivity Correct answer: A. High weight
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In a purely capacitive circuit, what is the average real power drawn from the AC supply?
A Negative B One C Infinite D Zero
How many soft-iron pieces/vanes are used in a repulsion-type moving-iron (MI) instrument?
The Indian Electricity Rules, 1956 were replaced by which of the following regulations?
A Central Electricity Authority Regulations (CEAR), 2010 B Indian Power Act, 2005 C Central Energy Code, 2008 D Indian Electricity (IE) Act, 2010 Correct answer: A. Central Electricity Authority Regulations (CEAR), 2010
The capacitance of a 3-core underground cable is determined by which of the following factors?
A Both core-to-core capacitance and core-to-sheath capacitance B The charge produced on the conductors C Only core-to-core capacitance D Only core-to-sheath capacitance Correct answer: A. Both core-to-core capacitance and core-to-sheath capacitance
Which of the following is NOT measured by a tri-vector meter?
A Power factor B Maximum demand, MD (in kVA) C kWh (active energy) D kVARh (reactive energy) Correct answer: A. Power factor
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What is the main function of an opto-coupler in a thyristor firing circuit?
A To amplify the triggering pulse B To increase the gate current C To reduce the firing angle D To provide electrical isolation between the control and power circuits Correct answer: D. To provide electrical isolation between the control and power circuits
At the instant of starting, how much back EMF is produced in a DC motor?
A Zero B Maximum C Equal to the supply voltage D Negative
What is the power factor of a pure inductor connected to an AC supply?
What is the usual colour of light emitted by a clear mercury vapour lamp?
A Bluish-white B Reddish C Greenish D Yellowish Correct answer: A. Bluish-white
If X_L > X_C in a series L-C circuit, the circuit behaves like ________.
A an overloaded circuit B an inductive circuit C a capacitive circuit D a short circuit Correct answer: B. an inductive circuit
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How can a power transistor such as a Bipolar Junction Transistor (BJT) be correctly described in terms of its terminal structure, charge-carrier type and mode of control?
A A two-terminal device that works with one type of charge carrier and is controlled by current. B A three-terminal device that works with one type of charge carrier and is controlled by voltage. C A two-terminal device that works with both types of charge carriers and is controlled by voltage. D A three-terminal device that works with both types of charge carriers and is controlled by current. Correct answer: D. A three-terminal device that works with both types of charge carriers and is controlled by current.
Using complex algebra, the impedance of a pure resistance R in AC circuits is represented as ________.
A 0 − jR B R + j0 C 0 + jR D R∠90° Correct answer: B. R + j0
Compared with an induction motor, why does a synchronous motor usually operate at full load with higher efficiency?
A Absence of slip losses B Higher power factor C Rotor slip losses D Higher rotor temperature Correct answer: A. Absence of slip losses
While designing a feeder in an AC distribution system, which of the following factors should be given the most importance?
A Current-carrying capacity and voltage drop B Height of load-bearing capacity C Attractive appearance of the insulator D Colour of the line support poles Correct answer: A. Current-carrying capacity and voltage drop
Which of the following laws is used to determine the direction of the induced EMF in a transformer winding?
A Joule's law B Fleming's left-hand rule C Ohm's law D Lenz's law Correct answer: D. Lenz's law
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Which is the control terminal of a power MOSFET?
A Collector B Gate C Anode D Emitter
As per IE Rules, what protection should be provided against overload in domestic circuits?
A Only ordinary switches B Protective devices of suitable rating such as a fuse or MCB C Only large-size conductors D No overload protection is required Correct answer: B. Protective devices of suitable rating such as a fuse or MCB
If the direction of motion of a straight conductor moving in a uniform magnetic field is reversed, what change occurs in the direction of the induced current?
A The magnitude of current increases B The direction of induced current reverses C The current stays in the same direction D It depends only on the magnetic field strength Correct answer: B. The direction of induced current reverses
In a solar PV power plant layout, what is formed when several PV cells are connected together?
A Rectifier B Transformer C Inverter D Modules Correct answer: D. Modules
Which theorem states that a linear two-terminal network can be replaced by an equivalent voltage source and a series resistance?
A Superposition theorem B Thevenin's theorem C Maximum power transfer theorem D Norton's theorem Correct answer: B. Thevenin's theorem
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What is the region around an electric charge in which an electric force acts called?
A Electric field B Magnetic field C Sound field D Heat field Correct answer: A. Electric field
In a passive square-wave generator, how can a square wave be obtained easily?
A By amplifying a triangular waveform B By using only a DC power supply C By making the magnetic field rotate D By converting the output of a sine-wave generator Correct answer: D. By converting the output of a sine-wave generator
What is the main function of the outer glass envelope in a sodium vapour lamp?
A To act as the main light source B To provide thermal insulation C To control the lamp current D To supply voltage to the lamp Correct answer: B. To provide thermal insulation
What does the diversity factor indicate in a lighting installation?
A Number of circuits B Total power loss C The expected proportion of the total load used simultaneously D Number of appliances used Correct answer: C. The expected proportion of the total load used simultaneously
Using complex algebra, which equation correctly gives the total impedance Ztotal of a two-branch parallel circuit with impedances Z1 and Z2?
A Ztotal = Z1 + Z2 B Ztotal = Z1 × Z2 C Ztotal = Z1 / Z2 D 1 / Ztotal = 1 / Z1 + 1 / Z2 Correct answer: D. 1 / Ztotal = 1 / Z1 + 1 / Z2
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A Kitkat fuse is used particularly in the __________ circuit.
A Neutral B Phase C Grounding D Earthing
When there is a current source between two meshes, which technique is used in mesh analysis?
A Super mesh B Mesh-voltage analysis C Super node D Node-current analysis Correct answer: A. Super mesh
In nodal analysis, the number of simultaneous equations to be solved is __________.
A equal to the number of meshes B equal to the number of independent nodes C one less than the number of independent nodes D equal to the number of branches Correct answer: C. one less than the number of independent nodes
What is the main function of parabolic collectors in a solar power plant?
A To convert water directly into steam B To drive the prime mover C To condense the steam D To heat the working fluid Correct answer: D. To heat the working fluid
In an AC circuit, apparent power (S) is given by what?
A The product of RMS voltage and RMS current B The product of reactance and voltage C The product of power factor and active power D The product of impedance and current Correct answer: A. The product of RMS voltage and RMS current
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Faraday's second law states that the induced EMF depends on the rate of change of which quantity?
A Capacitance B Resistance C Temperature D Magnetic flux Correct answer: D. Magnetic flux
Assuming constant field flux, which condition increases the armature torque in a DC motor?
A Reducing the supply voltage B Increasing the armature current C Reducing the load D Increasing the field resistance Correct answer: B. Increasing the armature current
Which turbine is most suitable for a power plant with high head and low flow?
A Crossflow turbine B Pelton turbine C Francis turbine D Kaplan turbine Correct answer: B. Pelton turbine
What happens to the current during the reverse recovery time of a power diode?
A It flows in the reverse direction for a short time B It becomes DC C It remains at zero D It increases indefinitely Correct answer: A. It flows in the reverse direction for a short time
Which standard unit is used to measure reactive power in an AC circuit?
A Ampere B Watt C Volt-ampere reactive D Ohm Correct answer: C. Volt-ampere reactive
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What is the primary function of automatic switching in distribution substations?
A To control the power factor B Emergency sectionalising and automatic transfer under abnormal or fault conditions C To reduce transformer size D To increase the transmission voltage Correct answer: B. Emergency sectionalising and automatic transfer under abnormal or fault conditions
The capacitance of a parallel-plate capacitor depends on which of the following?
A Thickness of the plates B Type of metal used for the plates C Potential difference between the plates D Separation between the plates Correct answer: D. Separation between the plates
How is the hydel efficiency of a hydroelectric power plant defined?
A Ratio of head to discharge B Ratio of electrical power output to the input potential energy of water C Ratio of firm power to total hydraulic power D Ratio of turbine shaft power to power delivered to the runner Correct answer: B. Ratio of electrical power output to the input potential energy of water
Which of the following is used as wiring material in residential building electrification?
Correct answer: C. Copper
Which of the following options correctly represents the connection principle used in staircase wiring?
A One switch controls the live wire and the other controls the neutral wire B Both switches are connected in parallel with the lamp circuit C Two-way switches are connected in a crossover arrangement, with the lamp connected between phase and the common terminal D Both switches are connected in series with the lamp circuit Correct answer: C. Two-way switches are connected in a crossover arrangement, with the lamp connected between phase and the common terminal
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If the total current of a parallel RC network connected to an AC source is 5 A and the current through resistor R is 3 A, determine the current through the capacitor.
What is the main objective of anaerobic reactors?
A To convert nitrogen into ammonia B To produce methane-rich biogas from organic waste C To decompose plastic and synthetic materials D To produce oxygen from dung and crop residues Correct answer: B. To produce methane-rich biogas from organic waste
If both the direction of armature current and the direction of the magnetic field in a DC motor are reversed together, what will be the effect on the motor's direction of rotation?
A Motor speed will double B Direction of rotation will reverse C Electromagnetic torque will become zero D Direction of rotation will remain unchanged Correct answer: D. Direction of rotation will remain unchanged
What is the ratio of starting torque to maximum torque usually for a squirrel-cage induction motor?
A Greater than 1 B Depends only on the applied voltage C Equal to 1 D Less than 1 Correct answer: D. Less than 1
In Hay's bridge for measuring inductance, which component is usually used as the standard resistor?
A Inductive resistor B Non-inductive resistor C Variable resistor D Standard capacitor Correct answer: B. Non-inductive resistor
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What is the SI unit of active power in an AC circuit?
A Ohm B Watt C Coulomb D Volt-ampere
In an unbalanced delta-connected load, which of the following is generally true?
A The power factor is always unity B The line voltages are not equal C The phase voltages are unequal D The line currents are not equal Correct answer: D. The line currents are not equal
In the EMF equation of a single-phase transformer E = 4.44 × f × N × φm, what does φm represent?
A Maximum current in the transformer core B Maximum voltage of the secondary winding C Average voltage in the winding D Maximum magnetic flux in the transformer core Correct answer: D. Maximum magnetic flux in the transformer core
How can a cage-rotor induction generator in a wind power plant be operated over a wider speed range?
A By increasing the rotor resistance B By increasing the size of the generator C By reducing the stator voltage D By changing the number of poles in the main winding Correct answer: D. By changing the number of poles in the main winding
In the EMF equation of a DC generator, what does Z represent?
A Number of commutator segments B Number of turns per coil C Total number of armature conductors D Number of armature coils Correct answer: C. Total number of armature conductors
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What is the main purpose of including a protective system in an electrical power system?
A To increase efficiency under normal operating conditions B To reduce the total cost of the power system C To protect equipment from damage by isolating the faulted section and maintaining continuity of supply D To make the equipment look more attractive Correct answer: C. To protect equipment from damage by isolating the faulted section and maintaining continuity of supply
In sinusoidal PWM, the reference signal is compared with what?
A A square-wave signal B A sawtooth signal C A triangular carrier wave D A DC bias signal Correct answer: C. A triangular carrier wave
Which conversion does a three-phase full-wave converter perform?
A DC to DC B AC to DC C DC to AC D AC to AC Correct answer: B. AC to DC
Which illumination method is used to trigger a Light Activated SCR (LASCR)?
A Only forward voltage B Direct light radiation C Thermal energy D Gate pulse signal Correct answer: B. Direct light radiation
Which of the following can be measured with an LCR meter?
A Current B Power C Hall coefficient D Impedance Correct answer: D. Impedance
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Which wiring layout plan shows the positions of switches and outlets?
A HVAC layout B Plumbing layout C Structural layout D Electrical layout Correct answer: D. Electrical layout
The function of a differential relay is to protect equipment against ___________.
A overcurrent faults B external faults C internal faults D both external and internal faults Correct answer: C. internal faults
Overcurrent protection in alternators ensures which of the following?
A Improvement in power factor B Voltage boosting C System stability and safety of the alternator D Increase in rotor speed Correct answer: C. System stability and safety of the alternator
Thevenin's theorem is applicable to ___________.
A only linear, bilateral AC and DC circuits B only non-linear AC circuits C only non-linear DC circuits D only non-linear, unilateral AC circuits Correct answer: A. only linear, bilateral AC and DC circuits
In a zone protection system of a power network, what is the primary objective of a back-up protection scheme?
A To operate faster than the primary relay in all cases B To prevent faults in adjacent zones C To operate only when the primary relay fails to isolate a fault in its own zone D To isolate the entire power system during a fault Correct answer: C. To operate only when the primary relay fails to isolate a fault in its own zone
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Compared with air, which of the following properties does sulphur hexafluoride (SF₆) gas used in circuit breakers have?
A Lower electronegativity B Lower dielectric strength C Lower arc-quenching ability D Higher dielectric strength Correct answer: D. Higher dielectric strength
Which of the following helps to improve the efficiency of a transmission line?
A Increasing the current B Using thinner conductors C Reducing the voltage D Increasing the transmission voltage Correct answer: D. Increasing the transmission voltage
In the equivalent circuit of a single-phase induction motor, core loss is represented by which of the following?
A A capacitor in series with the rotor winding B An inductance in parallel with the stator winding C A diode in series with the supply D A resistance in parallel or series with the magnetising reactance Correct answer: D. A resistance in parallel or series with the magnetising reactance
Why do distribution substations often have a neat appearance?
A Because of the paint on transformer housings B Because they are located in remote areas C Because of the use of compact gas-insulated transformers D Because underground cables are used for input and output connections Correct answer: D. Because underground cables are used for input and output connections
Which lamp provides diffuse illumination with good energy efficiency for indoor spaces such as railway waiting rooms?
A Mercury vapour lamp B High-pressure sodium lamp C Incandescent lamp D Fluorescent lamp Correct answer: D. Fluorescent lamp
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What is the function of the spring in a moving-iron instrument?
A Provides controlling torque. B Prevents damage due to overload. C Drives the pointer. D Acts as a damping device. Correct answer: A. Provides controlling torque.
What is meant by the breaking capacity of a circuit breaker?
A The minimum current required to trip it B The resistance it can handle C The maximum current it can safely interrupt D The number of circuits it protects Correct answer: C. The maximum current it can safely interrupt
What essential function is performed by the core in a single-phase transformer?
A It regulates the transformer's output voltage. B It physically separates both windings completely. C It supplies the input voltage to the transformer. D It provides a magnetic path for flux linkage between the coils. Correct answer: D. It provides a magnetic path for flux linkage between the coils.
When the contacts of a circuit breaker begin to separate while carrying current, what mainly causes an electric arc to form?
A Cooling of the contact surfaces during separation B A sudden rise in circuit voltage C Voltage collapse due to reduced contact pressure D Ionisation of the air or medium between the separating contacts Correct answer: D. Ionisation of the air or medium between the separating contacts
What are fuels produced in liquid or gaseous form from biomass called?
A Fossil fuels B Nuclear fuels C Bio-fuels D Synthetic fuels Correct answer: C. Bio-fuels
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In a three-phase delta connection, if one phase becomes open, what is its effect on the system?
A The system works normally. B The load keeps working but becomes unbalanced. C It shuts down completely. D All load connections get disconnected. Correct answer: B. The load keeps working but becomes unbalanced.
In the context of transmission lines, what does GMD (Geometric Mean Distance) represent?
A Sum of distances between all conductors B Radius of the conductor C Square root of the product of distances between all pairs of conductors D Average distance between two conductors Correct answer: C. Square root of the product of distances between all pairs of conductors
A DC motor has a supply voltage of 230 V, back EMF of 220 V and armature resistance of 1 ohm. What will be its armature current?
In an ideal AC distribution system, what power factor is assumed?
A 0.9 lagging B Unity C Zero D Lagging
What does a high load factor indicate in an electrical installation?
A The system has frequent voltage fluctuations. B The installation is poorly utilised. C The installation is oversized. D The electrical load is used more uniformly. Correct answer: D. The electrical load is used more uniformly.
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What is the total inductance of two inductors of 2 H and 3 H connected in series?
If the speed of a DC motor suddenly increases, what is the effect on back EMF?
A Back EMF is unaffected by speed changes. B Back EMF decreases as speed increases. C Back EMF increases as speed increases. D Back EMF becomes zero at high speed. Correct answer: C. Back EMF increases as speed increases.
Self-inductance is the property of a coil that opposes a change in _______.
A voltage B temperature C pressure D the current flowing through the coil Correct answer: D. the current flowing through the coil
In an AC circuit with a power factor of 0.8 lagging, the active power is ______________.
A 80% of the apparent power B 20% of the apparent power C 60% of the apparent power D 40% of the apparent power Correct answer: A. 80% of the apparent power
If the armature of a DC generator rotates at half its normal speed, what happens to the generated EMF?
A It becomes half. B It stays the same. C It doubles. D It becomes zero. Correct answer: A. It becomes half.
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The voltage equation of a DC motor is V = E + Ia Ra. What does E stand for in this equation?
A Load voltage B Induced EMF C Back EMF D Applied voltage Correct answer: C. Back EMF
Which design feature of a three-phase induction motor will increase the ratio of full-load torque to maximum torque?
A Increasing the air-gap length B Reducing the number of poles C Increasing the rotor resistance D Reducing the stator voltage Correct answer: C. Increasing the rotor resistance
Faraday's first law is related to which of the following?
A Electromagnetic induction B Capacitance C Heating effect D Mechanical motion Correct answer: A. Electromagnetic induction
How many transistors are required in a single-phase half-bridge inverter?
Which distribution scheme provides the highest reliability during faults?
A Radial system B Distributed generation system C Tree system D Ring main system Correct answer: D. Ring main system
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In a parallel R-L-C circuit, where the resistor (R), inductor (L) and capacitor (C) are in separate branches, which of the following values remains the same in all branches?
A The branch current. B The impedance value. C The applied voltage. D The power consumed. Correct answer: C. The applied voltage.
When an AC voltage is applied to a series RLC circuit operating at resonance, how does the circuit behave?
A As a purely resistive circuit B As an inductive circuit C As a capacitive circuit D As an open circuit with no current flow Correct answer: A. As a purely resistive circuit
The right-hand thumb rule is used to show the relationship between the direction of electric current and what?
A Frictional force B Heat produced C Magnetic field D Chemical reaction Correct answer: C. Magnetic field
Which lamp provides a stable colour temperature and high colour rendering suitable for accurate colour reproduction in photography studios?
A Mercury vapour lamp B Incandescent lamp C Fluorescent lamp D Halogen lamp Correct answer: D. Halogen lamp
When two inductors L₁ and L₂ are connected in series opposition and M is the mutual inductance between them, the effective inductance L_eq is given by which equation?
A L = L₁ + L₂ + 2M B L = L₁ + L₂ − M C L = L₁ + L₂ + M D L = L₁ + L₂ − 2M Correct answer: D. L = L₁ + L₂ − 2M
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In a single-phase full-wave fully controlled bridge converter with continuous load current, what is the effect on the conduction period of each thyristor as the firing angle increases?
A The conduction period of each thyristor becomes zero. B The conduction period of each thyristor decreases. C The conduction period of each thyristor increases. D The conduction period of each thyristor remains unchanged. Correct answer: D. The conduction period of each thyristor remains unchanged.
Which type of DC generator is most suitable for applications requiring automatic voltage regulation under changing load conditions?
A Series DC generator B Shunt DC generator C Compound DC generator D Separately excited DC generator Correct answer: C. Compound DC generator
What is the role of a star-delta starter in starting an induction motor?
A To increase the rotor current B To increase the starting torque C To reduce the supply voltage D To provide full line voltage to the stator Correct answer: C. To reduce the supply voltage
In a transformer, if the primary coil has more turns than the secondary coil, the output voltage from the secondary coil will be ________.
A less than the input voltage B equal to the input voltage C greater than the input voltage D zero Correct answer: A. less than the input voltage
A voltage differential relay operates when ___________.
A the load falls below the rated level. B the currents are out of phase. C the voltage is the same at both points. D the voltage difference exceeds a set value. Correct answer: D. the voltage difference exceeds a set value.
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What is the SI unit of illuminance used in lighting calculations?
When does conduction occur in a single-phase half-wave SCR (Silicon Controlled Rectifier) converter?
A During both the positive and negative halves of the AC cycle B During the entire AC waveform C Only at the zero-crossing points of the AC voltage D Only during the positive half-cycle after the SCR is triggered Correct answer: D. Only during the positive half-cycle after the SCR is triggered
What is the effect of a decrease in load power factor on the performance of a transmission line?
A Improves voltage regulation. B Increases line losses and decreases transmission efficiency. C Increases transmission efficiency. D Decreases load current. Correct answer: B. Increases line losses and decreases transmission efficiency.
If the excitation of a synchronous motor is increased above normal, what is its effect on the maximum active (real) power developed by the motor?
A The developed power increases up to the stability (pull-out) limit. B The developed power drops to zero. C The developed power becomes negative. D The developed power is unaffected by excitation under all operating conditions. Correct answer: A. The developed power increases up to the stability (pull-out) limit.
In single-pulse modulation, what controls the output voltage of the inverter?
A Load resistance B Output current C DC input voltage D Pulse width Correct answer: D. Pulse width
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What type of coil is used in moving-iron instruments?
A Transformer coil B Induction coil C Stationary coil with many turns D Moving coil with few turns Correct answer: C. Stationary coil with many turns
In a microcomputer-controlled DC motor drive, what type of feedback is essential for closed-loop speed control?
A Current feedback B Speed (tachometer) feedback C Voltage feedback D Temperature feedback Correct answer: B. Speed (tachometer) feedback
Nodal analysis used for solving electrical circuits is based on ___________.
A Kirchhoff's Voltage Law (KVL) B Ohm's law C Kirchhoff's Current Law (KCL) D Faraday's law Correct answer: C. Kirchhoff's Current Law (KCL)
Which turbine is most suitable for a hydro-power plant with low head and a large water flow?
A Kaplan turbine B Pelton wheel C Impulse turbine D Francis turbine Correct answer: A. Kaplan turbine
What is a material called that gets magnetised easily and retains its magnetisation for a long time?
A Superconducting material B Ferromagnetic material C Diamagnetic material D Paramagnetic material Correct answer: B. Ferromagnetic material
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