Q.66 Which of the following methods of lighting calculation can be used for rough calculations and checking purposes?Ans 1. Lumen method2. Light flux illuminance method3. Watt per sq m method4. Point to point methodCorrect Ans: 3
RankiQ Discuss Latest Questions
Q.64 If a source is delivering maximum power to a load, the power transfer efficiency of the circuit is always:Ans 1.2.3.4.Correct Ans: ...
Q.68 The average demand is the average of loads taking place on the power station in a given period of ________.Ans 1. current2. frequency3. time4. velocityCorrect Ans: 3
Q.67 Calculate the inductance of a coil that induces 150 V, when a current changes at the rate of 3 A/s?Ans 1. 300 H2. 50 H3. 150 H4. 5 HCorrect Ans: 2
Q.70 In a single phase Induction Motor, the auxiliary and running windings are spaced _________electrically apart.Ans 1.2.3.4.Correct Ans: 4
Q.71 Corona loss in DC transmission supply is _________.Ans 1. 10 times more than AC2. less than AC3. infinite4. zeroCorrect Ans: 2
Q.69 A 3-phase, 1500 KVA, 6600 v, star-connected alternator has 9 slots per pole and 6 conductors per slot. The output of this alternator on a particular load is given by 1200 KW and total losses of the ...
Q.62 Consider the following statements about cylindrical type synchronous generators and select the most appropriate option.Ans 1. The number of poles under such a constructional framework is higher and thus suitable for gas turbines.2. The constructional framework is ...
Q.60 In the diode V-I characteristics, the resistance of the circuit is _____________ if a slope is drawn between the voltages 100V to 200V and the corresponding current is 5A and 20A.Ans 1. 20 Ω2. 10 Ω3. 6.66 ...
Q.58 The salient pole type construction is suitable for running low-speed prime-movers. Which of the following suits the best explanation for the above statement?Ans 1. The air gap flux should not be affected by the rotor angle position.2. ...
