1.The unit of Electric Energy is Volt AmpKWkWh JouleAns : kWh2.A state during which nothing happens is known asLDANopMAROP CodeAns: Nop3.A relay used for protection of motors against overload isImpedance relayElectromagnetic attraction typeThermal relayBuchholz's relayAns :Thermal Relay4.which of the following relays is used on Transformers?Buchholz's relayMHO RelayMerz Price RelayNoneAns: Buchholz's relay5.Solid Grounding is used for Voltagesabove 220 kvabove 11 kvbelow 660 vbelow 115 vAns: 660 v6.Maxwell bridge is used to measureResistanceInductanceCapacitanceFrequencyAns: Inductance7.least reliable power plant iswindgeothermaldiesalans: wind8.An Ideal voltage source has internal resistancezeroinfinityans: zero9.An Ideal current source has internal resistancezeroinfinityans: infinityFacbook : LESCO Wapda Test 2015Hanzala Fayyaz
10.A moving iron ammeter coil has few turns of thick wire in order to have:A. Low resistanceB. High sentivityC. Effective dampingD. Large scaleans: A11.Electrical lines of force about a negative charge are12.A digital signal is what in 13.-----is defined as the measure of instrument by which it is error freeAccuracyPrecisionResolutionNone of above14.Δ x H = J + D is Maxwell equation15.A diode that has a negative resistance characteristics is the 16.Which type of engine uses maximum air fuel ratioA. Petrol engineB. Gas engineC. Diesel engineD. Gas turbineE. Hydro turbine17.The channel of a JFET is between the18.Wimbledon Tournament is for? lawn tennisbadmintontable tennis19.on 6th September India attackedlahoreSialkotFacbook : LESCO Wapda Test 2015Hanzala Fayyaz
20.The EM field and current are concentrated close to the surface of the conductor. The phenomenon is called? 21.Instrument has same calibration for AC & DC valueInduction typehot wire typemoving coil typemoving iron type22.Which thing happens in gas discharge lamps23. _____ acts as voltage controlled variable capacitor24.By which a meter after checking with no current returns to its previous state25.By connecting a shunt of higher value in ammeter what will decrease26.Which of the following Rukn-e-Islam is called a shield?27.Washington DC is called ____ (City of Magnificent Distance)28.Which is Semiconducter SwitchAns = Thyristor29.Efficency of thermal plantAns =30-40%30.Current chopping accures in ------- Circuit breaker:Air blast CBvacuum CBOil filled CBsf6 CB31.Northern end of Pakistan is occupied by western range of which of followingHimalia rangekarakarm range32.In z transform cos pi/4 is the period is equal to-------33.which pass connect chitral and gilgit??34.first person on moon35.which theorem is used to analyse fault
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