Additional Assistant Engineer (Electrical) Technical - Electrical Engineering

Damper windings in alternators help prevent which operational issue during sudden load changes?

What does the Gujarat policy state about residential solar projects and consumer sanctioned load?

To prevent an alternator from operating in motor mode due to prime mover failure, a/an __________ relay is used.

Which type of wire is typically used to connect a ceiling fan to the power supply in residential buildings?

Voltage magnification factor of a series resonance circuit is:

Which of the following statements is not true about a vertical amplifier?

A balanced delta-connected load of (4+j3) Ω per phase is connected to a balanced three-phase 440V supply. The phase current is 10A. Find the total active power.

For a power inverter circuit that demands fast switching and high efficiency, which MOSFET type would be most effective?

Which of the following systems is not a part of single phase energy meter?

The transformation ratio of an isolation transformer is usually:

In a repulsion-type moving iron instrument, how is the deflecting force produced?

Which of the following is typically the first step when attempting to locate a fault in a residential electrical circuit?

You are tasked with installing electrical wiring in a newly constructed commercial building. Which tool would be most appropriate for safely pulling multiple wires through long conduit runs while minimizing damage to the wire insulation?

Which of the following is a characteristic of a radial distribution system?

An underground cable installation in an industrial facility requires both mechanical and electrical protection. Which combination of methods best ensures comprehensive protection for the cables?

After a thyristor in a power electronic converter of a wind turbine system is triggered into conduction, under which condition does it stop conducting current?

In large buildings, internal power distribution is generally carried out using ________________.

A current source in parallel with a resistance can be converted into:

The armature winding symbol mainly represents which electrical property?

What is the main advantage of using a Doubly-Fed Induction Generator (DFIG) in wind power generation?

Why are three-phase induction machines generally unsuitable for applications requiring rapid acceleration and deceleration due to dynamic performance limitations?

Under the Gujarat Lift and Escalator Act, where a licence is mandatory for lift operation, the authority empowered to grant the lift operating licence is the __________________.

Solar Stirling engines are often described as “maintenance-free”. Which of the following reasons supports this statement?

What does a synchronoscope indicate during alternator synchronization with the power system?

Under the Gujarat Lifts and Escalators Rules, 2001, which rule specifies the conditions for safe operation of lifts and escalators?

The blocked rotor test performed on a single-phase induction motor helps to determine:

In commercial electrical installations, the concept of load diversity is important in order to:

The instruction CPL P1.5 in the 8051 microcontroller performs which action?

Under the Gujarat Electricity Industry Act, 2003, which company is responsible for electricity generation in Gujarat after restructuring?

What is the condition for maximum efficiency in a DC motor?

Which type of solar PV system uses batteries to store energy for later use?

If an underground cable system uses a galvanized iron pipe driven into moist soil for safety, which type of earthing is being applied?

Which of the following methods helps find the exact point of breakdown in an underground cable?

Under the Gujarat Lifts and Escalators Rules, 2001, which rule deals with restrictions on granting licence for operating lifts or escalators?

Which conductor characteristic is most effective in reducing the corona effect in EHVAC transmission lines?

In a 3-phase transmission line, if Dm is the geometric mean distance (GMD) between conductors, r is the radius of each conductor, and ε is the permittivity of the surrounding medium, which expression gives the capacitance per phase for a symmetrically spaced line using the GMD method?

In terms of voltage stress across SCRs, which of the given options correctly compares a bridge converter to a mid-point converter?

In a current divider circuit using two conductances G1 and G2, what is the correct expression for the current through the branch with conductance G1, if the total current entering the node is I?

Which underground cable is suitable for transmitting electricity to a residential building from the street?

An electromagnetic relay operates primarily on which fundamental physical principle?

The type of line support in transmission line does not depend upon the:

Industrial electrical installations often require power quality measures due to:

The "criterion of equal maximum voltage" is most critical in:

What essential condition must be fulfilled for synchronous serial communication to function correctly in the 8051 microcontroller?

The operation of repulsion induction motors is based on:

In which application would you select a TRIAC over a regular SCR?

In a megger, why is a high DC voltage (typically 500 V to 5000 V) used instead of a low DC or AC voltage for insulation resistance measurement?

A concentrated solar power system with parabolic trough uses heliostat to perform which of the following functions?

Which of the following is a type of Power MOSFET based on its operation mode?

Which type of energy source is highlighted in Gujarat's policy for rooftop projects by residential consumers?

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R), choose the correct answer from the options given below. Assertion: In a pure inductor connected to an AC source, the voltage across the inductor leads the current by 90°. Reason: An inductor opposes changes in current, creating a phase difference where the voltage reaches its peak before the current.

Which of the following power transmission lines has the least charging current and skin effect?

In flux control (field weakening), how does reducing the field current affect the motor's speed and torque?

The prospective short-circuit current at a fault location in a power system depends on:

During circuit interruption, what does the term arc voltage refer to?

In the context of transformer protection, which of the following protection schemes is precisely designed to distinguish earth faults within the transformer windings, mainly in the star-connected primary side?

Under which section of the National Building Code of India are lift installations in buildings specifically covered?

Which tool is commonly used to strip insulation from electrical wires during building installation?

In an electric arc, since the arc path is purely resistive, the arc voltage is:

Which region in Gujarat has a tidal energy potential of 7 GW according to the state's energy policy?

Which type of wind turbine towers is most commonly preferred due to its transportability and stiffness?

What happens when the phase sequence of a 3-phase load is reversed?

For a transposed 3-phase transmission line, the mutual distances between the conductors are 4 m, 4 m, and 5 m, respectively. What is the equivalent mutual Geometric Mean Distance (GMD) of the line?

The efficiency of a 20 KVA, 2000/200 V, single phase transformer at unity pf is 98%. The total loss at this condition is:

In a balanced star connected network, what is the sum of the three phase currents at the neutral point?

Why are electrical wires used with proper insulation in lighting circuits of houses?

Building electrical installations in India should primarily comply with which regulations/standards to ensure electrical safety and proper installation practices?

Which company was formed as a result of the restructuring of the Gujarat Electricity Board (GEB) under the Gujarat Electricity Industry Act, 2003?

What is the typical frequency at which generators in the national grid operate in India?

Accessibility features provided in lifts are primarily intended to assist which group of users?

The Schering bridge is primarily used to measure:

What is the purpose of the Time Multiplier Setting (TMS) in an overcurrent relay?

What is the primary function of grounding in an electrical installation?

In a power system, the demand factor is the ratio of the:

Identify the correct instruction type of 'CJNE A, #25H, NEXT' in an 8051 microcontroller.

Which 8051 instruction combines a conditional jump with a bit-clearing operation, jumping if the specified bit is set and then clearing that bit after the jump condition is checked?

What is the primary function of a protective relay in an electrical system?

In an AC distribution system, what is the primary function of a distributor?

___________ technology is commonly used for small-scale power gasifiers.

A synchronized UJT triggering scheme for an SCR is known as __________, and the method of controlling output power by varying the resistor is called __________.

In a circuit breaker, current interruption is achieved when the arc is:

A single-phase autotransformer has a total of 1000 turns in its winding. If the secondary connection is tapped at 400 turns, determine the transformation ratio (k).

What is the role of the braking magnet in an energy meter?

In a series resonance circuit, what causes voltage magnification across the inductor or capacitor?

Which of the following is a key specification when selecting a distribution transformer?

The primary purpose of prescribing construction standards for lifts is to ensure:

What causes the crawling phenomenon in induction motors?

In a Buchholz relay, what does the mercury switch attached to the upper float do?

The deflecting torque (Td) in an electrostatic voltmeter is fundamentally proportional to:

Stray losses in a DC motor are sum of:

For a symmetrical delta connection where R1=R2=R3=R, what is the equivalent resistance Req when converted to a star (Y) network?

Which property of a resistor is most likely to affect the accuracy of high resistance measurement?

According to the duality theorem, what is the dual of a series connection of resistors?

A distribution transformer generally operates for long durations with its load varying throughout the day. For achieving maximum overall efficiency under such operating conditions, which design criterion is preferred?

What type of cooling is typically used in outdoor distribution transformers?

When a timer in the 8051 microcontroller is programmed as a counter, to which pin is the external clock pulse applied for Timer 0?

The Schering bridge is primarily used for the measurement of which of the following?

Which type of turbine is most commonly used in high head plants?

Why are ground wires installed at the top of 400 kV transmission towers?

Which of the following factors increases corona power loss?