Assistant Engineer (Electrical), Class-2, Road Master Question Paper (BPB) - Technical Section (Series M)

ARMS value/Peak factor BRMS value*Form factor CRMS value/Form factor DRMS value*Peak factor

AAlong the line perpendicular to the electric field BAlong the line tangent to the electric field CElectric field has no direction DElectric field has a random direction

A5 B10 C20 D40

A6.24 × 10¹⁸ electrons B12.48 × 10¹⁸ electrons C1.602 × 10¹⁹ electrons D3.204 × 10¹⁹ electrons

AIt will aid the supply voltage BIt will be double the supply voltage CIt will oppose the supply voltage DIt will be half of the supply voltage

A50 B100 C150 D200

A7.5 A/m2 B15 A/m2 C60 A/m2 D120 A/m2

ADiamagnetic BParamagnetic CFerromagnetic DNot a magnetic substance

AGreater than 1 BLess than 1 CEqual to 1 DZero

AIncreases BDecreases CRemains constant DBecomes zero

AYes BNo CDepends on the circuit DInsufficient information provided

AThere is a possibility for a node to store energy BThere cannot be an accumulation of charge at a node CCharge accumulation is possible at node DCharge accumulation may or may not be possible

AMaximum BMinimum CZero DFinite value

AHigh Q factor BLow Q factor CUnity Q factor DZero Q factor

A32.76V B35.56V C36.12V D34.21V

An + 5 Bn + 3 Cn Dn − 1

Aline voltage > phase voltage Bline voltage < phase voltage Cline voltage = phase voltage Dline voltage > = phase voltage

Ar = dd(t)/dt Bd = dr/dt Cδ(t) = d²r(t)/dt² Dr = d2(d)/dt2

A1.414 mH B2 mH C1 mH D5.5 mH

A0° B180° C45° D90°

A15 B10 C5 D1

ABoth stator and rotor windings carry current BAir gap is uniform CStator winding alone carries current DRotor winding alone carries current

A3010 B4300 C2400 D2800

AHopkinson BRetardation CField DSwinburne

AMagnetic behaviour of the air gap of the DC machine BMagnetic behaviour of the air gap of the induction machine CMagnetic behaviour of the iron core DAll of the mentioned

Aremain constant Bdecrease Cincrease Dno relation exists between the power and prime mover droop characteristic

AStationary w.r.t. stator BRotating at double the speed Ns w.r.t. rotor CRotating in direction opposite to rotor DRotating at Ns w.r.t. rotor

AStable parallel operation BHigher stability limit CSinusoidal mmf distribution DAll of the mentioned

ASynchronous motor BTransformer CUniversal motor DStepper motor

AOC test − h.v. open, SC test − l.v. short-circuited BOC test − l.v. open, SC test − h.v. short-circuited COC test − l.v. open, SC test − l.v. short-circuited DOC test − h.v. open, SC test − h.v. short-circuited

A1230 kVA B1440 kVA C1680 kVA D1150 kVA

AA has poorer pf than B BB has poorer pf than B CLesser power factor angle DBoth operate at same power factor

ADivergence is zero BDivergence is unity CCurl is zero DCurl is unity

ASolenoidal BDivergent CRotational DCurlfree

A1/3 B2/3 C1 D4/3

A120 π B180 π C240 π D300 π

A3 B10/3 C11/3 D4

AOhm’s law and Gauss law BAmpere law and Gauss law COhm’s law and Ampere law DMaxwell law and Ampere law

A3.33 k ohm B2.33 k ohm C3.33 M ohm D2.33 M ohm

A3cos t − 5sin t B− 3cos t + 5sin t C− 3sin t − 5cos t D3cos t + 5sin t

A131.94 mH B94.131 mH C131.94 H D94.131 H

A22.5 B4.5/5 C5/4.5 D9.5

AWhen its output impedance is low and the input impedance is low BWhen its output impedance is high and the input impedance is high CWhen its output impedance is high and the input impedance is low DWhen its output impedance is low and the input impedance is high

AParity method BChecksum method CBit generation method DOdd-Even method

AA AND B BA OR B CA XOR B DA EX-NOR B

ASymbolic reduction BTTL logic CUsing Boolean algebra DUsing a truth table

A4 B8 C10 D2

A0 to 2n B0 to 2n + 1 C0 to 2n − 1 D0 to 2n+1/2

A10 kHz B20 kHz C30 kHz D60 kHz

A15 ns B30 ns C45 ns D60 ns

A1110 B0111 C1011 D1001

A10111000 B10110111 C11110000 D11111100

ADirectly with the sampling interval BInversely with the sampling interval CMore precision with longer sampling interval DLess precision with longer sampling interval

AUART BKey matrix CMemory chip DSeries in Parallel out

ARight, one BRight, two CLeft, one DLeft, three

Aemitter of T1 and T2 Bemitter of T1 and base of T2 Cemitter of T1 and base of T1 Demitter of T1 and collector of T2

A√2 × 22 A B1 × 11 A C√2 × 11 A D1 × 22 A

AConnecting a series reactor BMaintaining α1 + α2 = 180° COperating only one converter DAdding an extra SCR

A2π B3π/2 Cπ/2 D3π/4

Ad = π B2d = π Cnd = π Dnd = 2π

APower generation BElectric heating CConveyor belt motion DPower transmission

An × Vs BVs CVs/n DVs × (n − 1)

A4 B8 C6 D2

A200 kV B400 kV C500 kV D100 kV

A10.87 A B87 A C21.74 A D32 A

ASMPS is less sensitive to input voltage variations BSMPS is smaller as compared to rectifiers CSMPS has low input ripple DSMPS is a source of radio interference

Ax(t) = t³− 2t Bx(t) = sin(t) Cx(t) = sin²(2t) + cos²(2t) − 2t Dx(t) = log(cos(t))

AIf the equation x (t) = x (t + T) is satisfied for all values of T BIf the equation x (t) = x (t + T) is satisfied for only one value of T CIf the equation x (t) = x (t + T) is satisfied for no values of T DIf the equation x (t) = x (t + T) is satisfied for only odd values of T

AUnit ramp sequence BUnit impulse sequence CExponential sequence DUnit step sequence

Ak = 1, 4 Bk = 2, 3 Ck = 5, 4 Dk = 4, − 1

A50.53 Hz, 49.57 Hz B52.12 Hz, 49.8 Hz C55.02 Hz, 48.95 Hz D50 Hz, 49 Hz

Ab need not be equal to a but v must be equal to ω Bv need not be equal to ω but b must be equal to a Cb must be equal to a and v must be equal to ω Db need not be equal to a and v need not be equal to ω

A1 B0.5 C2 D2.5

AInfinite series limit BContinuous function limit CDiscrete function limit DBreak point limits

ASquare wave BSine wave CHalf wave rectified sine wave DTriangular wave

Aincreases with the increase of inductance and the decrease of resistance Bincreases with the increase of inductance and the increase of resistance Cincreases with the decrease of inductance and the decrease of resistance Dincreases with the decrease of inductance and the increase of resistance

ACausal and stable BCausal but not stable CStable but not causal DNeither causal nor stable

ASquare wave BTriangle wave CSaw tooth wave DSinusoidal wave

ALeakage reactance BDamper winding reactance CArmature winding reactance DField winding reactance

A− 6.63% B− 5.77% C− 10% D− 8.63%

A230 m/s B300 m/s C320 m/s D360 m/s

A7/5 B5/7 C3/5 D5/2

A1.12 Ω B2.12 Ω C4.24 Ω D3.24 Ω

A4756 B4873 C4299 D9055.3

A40.75 B48.75 C49.75 D50.25

ALLG fault BLG fault CThree phase to ground fault DLine to Line fault

A0°, 180°, 300° B0°, 120°, 240° C60°, 180°, 300° D120°, 180°, 240°

AOnly 1 and 2 BOnly 2 and 3 COnly 1 and 3 D1, 2 and 3

ABoth (A) and (R) are true and (R) is the correct explanation of (A) BBoth (A) and (R) true but (R) is not the correct explanation of (A) C(A) is true but (R) is false D(A) is false but (R) is true

ABoth (A) and (R) are true and (R) is the correct explanation of (A) BBoth (A) and (R) are true and (R) is not the correct explanation of (A) C(A) is true but (R) is false D(A) is false but (R) is true

AA rectangular pulse of duration T BA rectangular pulse of duration 2T CA triangular pulse of duration T DA triangular pulse of duration 2T

AThe direct method BThe indirect method CNot determined DAlways unstable

AOne BTwo CThree DFour

A1 − 1/3(4e^(−t) − e^(−4t)) B1 − 1/2(6e^(−t) − e^(−4t)) C1 − 1/3(6e^(−t) − e^(−4t)) D1 − 1/2(4e^(−t) − e^(4t))

A75 B25 C20 D10

AReceive control signals BTransmit control signals CModify control signals DCreate control signals

A0010 H B0032 H C0028 H D0030 H

ABCD addition BExcess-3 addition CBinary addition DOctal addition

AReset pins BSet pins CProgrammable I/O ports DOnly output ports

AInput port is loaded into input latches BInput port is loaded into output latches COutput port is loaded into input latches DOutput port is loaded into output latches

ASS and SP are initialised BOnly SS is initialised COnly SP is initialised DSS and SP need not be initialised

A1 clock cycle B2 clock cycles C3 clock cycles D4 clock cycles

A1 clock cycle B2 clock cycles C3 clock cycles D4 clock cycles

ACLEAR BSET CHLDA DRESET

AMain program BInterrupt routine IRT2 for first subprocessing the unit CInterrupt routine IRT3 for first subprocessing the unit DAll of the mentioned

ATransfer with LOCK (active low) signal BHold request CProcessor extension data transfer DData transfer performed by EU (execution unit)

A34 clock cycles B24 clock cycles and 80286 is SET C34 clock cycles and 80286 is SET D34 clock cycles and 80286 is RESET

A1 B2 C3 D4

A1 degree of freedom B2 degrees of freedom C5 degrees of freedom DMany degrees of freedom

Athyristor Bmercury valves Cdiodes Dmechanical switches

AXLPE (Cross-linked polyethylene) BPVC (Polyvinyl chloride) CWood DRubber

ABy decreasing the capacitance in the higher stages BBy decreasing the capacitance in the lower stages CBy increasing the capacitance in the higher stages DBy increasing the capacitance in the lower stages

A1 - 50 cm B50cm - 10 m C10 - 100 m DAbove 100 m

APower-factor voltage test BInternal or partial discharge test CVisible discharge test DMomentary withstand test

AHeating effect BCharge transfer CCurrent DVoltage

AStored in the magnetic field BStored in the electric field CDivided equally between the magnetic and electric fields DZero

AHydroelectric power plant BThermal power plant CNuclear power plant DSolar electric power plant

A(kWh supplied in a day) / 24 B{(kWh supplied in a day) / 24} × 365 C{(kWh supplied in a month) / (30 × 24) D(kWh supplied in a year) / (24 × 365)

AReserve capacity available but not ready for use BReserve capacity available and ready for use CGenerating capacity connected to bus and ready to take load DCapacity in service in excess of peak load

ARemains the same BDrops to zero CBecomes four times its initial kinetic energy DBecomes ten times its kinetic energy

AHeat energy → Mechanical energy → Electrical energy BHeat energy → Electrical energy → Mechanical energy CMechanical energy → Heat energy → Electrical energy DElectrical energy → Heat energy → Mechanical energy

ATo convert mechanical energy into electrical energy BTo convert water into steam CTo cool down the steam DTo increase the pressure of the steam

ATo convert steam back into water BTo increase the temperature of the steam CTo generate electricity DTo control the speed of turbine

ACoal BNatural gas CUranium DOil

A10-20% B30-40% C50-60% D70-80%

ATo cool down the steam BTo cool down the water from the condenser CTo generate electricity DTo control the pressure of the steam

A1,120 kJ B18,000 kJ C2,258 kJ D54,000 kJ

ATo eradicate extreme poverty and hunger BTo ensure environment sustainability CTo reduce child mortality DTo develop a global partnership for development

ATo keep the decrease in global average temperature to below 2 degree C BTo keep the decrease in global average temperature to above 2 degree C CTo keep the increase in global average temperature to above 2 degree C DTo keep the increase in global average temperature to below 2 degree C

AFuel price BDriver CErgonomics DFuel tank

A23.5 degrees B0.53 degrees C32 minutes D− 23.5 degrees

AMaintaining product standards and consistency BFinancial risk analysis CEnsuring employee satisfaction DMonitoring production costs

AEnergy Conservation Act, 2001 BElectricity Act, 2003 CIndian Electricity Rules, 1956 DIS 3043

AIS 732 BIS 3043 CIS 1956 DIS 2001

AGujarat Solar Power Policy-2021 BGujarat Renewable Energy Policy-2023 CGujarat Waste to Energy Policy-2022 DGujarat Small Hydel Policy-2016

AElectricity Act, 2003 BGujarat Electricity Industry Act, 2003 CEnergy Conservation Act, 2001 DIndian Electricity Rules, 1956

AElectrical wiring installations BEarthing systems CSolar panel manufacturing DWind turbine installation

AFuel import quotas BPolitical election dates CTariffs for electricity DManufacturing subsidies

A2016 B2018 C2021 D2023

A2016 B2019 C2021 D2022

APromote coal-based power plants BEncourage the separate development of wind and solar farms COptimize land and grid infrastructure by combining wind and solar generation DPhase out all renewable energy

A2001 B1956 C2003 D2016

ABureau of Energy Efficiency (BEE) BGujarat Energy Development Agency (GEDA) CCentral Electricity Authority (CEA) DIndian Standards Institution (ISI)

A10 MW B25 MW C50 MW D100 MW

A0.5 Ω B2.0 Ω C5.0 Ω D10.0 Ω

AIndian Electricity Rules, 1956 BEnergy Conservation Act, 2001 CElectricity Act, 2003 DIS 732

ARed BBlack CGreen DBlue

AForeign tourists BMassive investments CAgricultural workers DIT companies

AProfitability BSafety and supply standards CCompetition DPrivatization

ABureau of Energy Efficiency (BEE) BMinistry of Housing and Urban Affairs CGujarat RERA DGEDA

ASolar panels BWind turbines CHydro plants DTransformers

AImprove the power factor BProvide a safe path for leakage/fault current to flow CStabilize the system frequency DReduce the electricity bill

A2 years B3 years C5 years D10 years

AGujarat Small Hydel Policy, 2016 BGujarat Wind Solar Hybrid Power Policy, 2018-19 CGujarat Waste to Energy Policy, 2022 DGujarat Solar Power Policy, 2021

A1/500th B1/1000th C1/5000th D1/100th

AEnergy Conservation Act, 2001 BElectricity Act, 2003 CIndian Electricity Rules, 1956 DIS 3043

AIncreasing coal imports BPower sector reforms CBanning all private players DNationalizing all power plants

AElectricity Act, 2003 BNational Action Plan on Climate Change (under BEE) CGujarat Waste to Energy Policy DIndian Electricity Rules, 1956

ARegulating electricity tariffs BPromoting energy conservation and renewable energy COperating large thermal power plants DManaging the state's power grid

ATo open and close the doors BTo indicate the floor number CTo activate the safety brake in case of overspeeding DTo control the lift's interior lighting

A15 degrees B30 degrees C45 degrees D60 degrees

AEvaporator BCompressor CExpansion valve DCondenser

AGeneral office workstations BWater coolers CFire pumps and fire alarms DDecorative lighting

ASurge protector BLightning rod (air terminal) CGrounding wire DFuse

ATo reduce the daily electricity bill BTo provide primary power to the entire building CTo act as a backup power source during a grid outage DTo power only the HVAC system

ATo protect against over-voltage BTo protect against short circuits CTo protect against high-frequency noise DTo protect humans from electric shock due to earth faults

ACCTV System BPublic Address System CBuilding Management System (BMS) DFire Alarm System

AProjectors and screens in a conference room BBackground music system CVideo conferencing equipment DThe building's fire hydrant pressure

AStar BBus CRing DMesh

APhasing out all incandescent lighting BMandating specific brands of wires CRegulations for electrical vehicle charging infrastructure DProhibiting the use of aluminium wiring

ATo automatically detect smoke BTo allow a person to manually trigger the fire alarm CTo silence the alarm after an incident DTo test the sprinkler system

AHigh-Pressure Sodium (HPS) BMercury Vapor CMetal Halide DLight Emitting Diode (LED)

AOnly the light bulb or lamp BThe supporting pole CThe complete lighting fixture including the lamp, housing and reflector DThe underground electrical cable

AReciprocating pump BSubmersible pump CCentrifugal pump DDiaphragm pump

AThe pump's physical size BThe rotational speed of the motor CThe total height to which a pump can move water, accounting for friction losses DThe volume of water it can move per minute

ALower cost than silicon BHigher efficiency and smaller size for power converters CEasier manufacturing processes DBetter performance at very low temperatures