Q.66 With reference to fault analysis, L-L fault is ____________ fault and the L-L-L-G fault is _________ fault.Ans 1. Symmetrical, Unsymmetrical2. Unsymmetrical, Unsymmetrical3. Unsymmetrical, Symmetrical4. Symmetrical, SymmetricalCorrect Ans Provided: 3

Q.84 An alternator has a per unit impedance of 0.9 p.u. to a base of 20 MVA, 33 kV, Then the p.u. impedance to the base of 60 MVA and 11 kV will be _____________.Ans 1. 24.32. 32.43. ...

Q.82 In a 3-core cable there are _______ capacitances formed.Ans 1. 32. 43. 64. 9Correct Ans Provided: 3

Q.67Ans 1. Shunt positive2. Shunt negative3. Series positive4. Series negativeCorrect Ans Provided: 1

Q.62 Which of the Following is NOT a characteristic of PMMC instruments?Ans 1. No hysteresis loss2. Non-uniform scale3. Used for DC measurements only4. High accuracyCorrect Ans Provided: 2

Q.78 For a synchronous generator supplying a balanced 3-phase load, the armature reaction flux is ___________ in magnitude and rotates at ____________ speed.Ans 1. Constant, Sub-synchronous2. Constant, Synchronous3. Variable, Super-synchronous4. Variable, Sub-synchronousCorrect Ans Provided: 2

Q.65Ans 1. Poisson’s law2. Biot-Savart law3. Gauss’s law4. Ampere’s circuital lawCorrect Ans Provided: 4

Q.63 A power amplifier supplies 50 W to an 8 Ω speaker. Find ac output voltage and ac output current.Ans 1. 50 V, 1 A2. 25 V, 2 A3. 12.5 V, 4 A4. 20 V, 2.5 ACorrect Ans ...

Q.85Ans 1. 1.90 Ω2. 1.60 Ω3. 3.25 Ω4. 16.75 ΩCorrect Ans Provided: 3

Q.79 In an oil circuit breaker, due to heat the oil decomposes and the gases are liberated. Which of the following gas is usually NOT liberated in this process?Ans 1. Hydrogen2. Ammonia3. Acetylene4. MethaneCorrect Ans Provided: 2