Q.30 If the distance between two parallel current carrying conductors is tripled, then the magnitude of force between them will become _______.Ans 1. six times2. one-third3. three times4. one-sixthCorrect Ans: 2

Q.28 Which of the following statements is true about phasor representation of sinusoidal quantities?Ans 1. Represent a sinusoidal quantity by a line of definite length rotating in the clockwise direction with different angular velocity.2. Represent a sinusoidal quantity ...

Q.33 The phenomenon of fluorescence in a fluorescent lamp mainly occurs due to the presence of:Ans 1. phosphorous2. argon3. mercury4. xenonCorrect Ans: 1

Q.23 The rectifier efficiency of a half-wave rectifier is ______________ if the input power to the rectifier is 150 W and output power is 50 W.Ans 1.2.3.

Q.27 A capacitor of capacitance C farad is connected in parallel with a resistance of R Ω. An AC voltage of V volt supplied across the circuit. if the current flowing through resistance is equal to IR and ...

Q.24 Maximum demand is generally ________ the connected load.Ans 1. less than2. more than3. have no relation with4. equal toCorrect Ans: 1

Q.25 The coil of shaded pole induction a single-phase induction motor is highly ________.Ans 1. repulsive2. capacitive3. inductive4. resistiveCorrect Ans: 3

Q.26 If the hydroelectric power plant rating is 200 MVA and it currently supplies only 120 MVA, then what is the value of the hot reserve?Ans 1. 120 MVA2. 200 MVA3. 80 MVA4. 320 MVACorrect Ans: 3

Q.15 Creep adjustments in single-phase energy metres are done by _______.Ans 1. exciting the pressure coil2. adjusting the turns ratio3. providing two holes diametrically opposite in the rotating disc4. exciting the current coilCorrect Ans: 3

Q.12 Comparative statement is an important document to evaluate ________.Ans 1. limited tendering2. imprest purchase system3. offers received against an enquiry4. spot tenderingCorrect Ans: 3