Q.81 Practical way of obtaining static voltage equalization in series connected SCRs by the use of:Ans A. Resistors of different values across each SCRB. Resistors of same value across each SCRC. resistors connected in series with SCRD. One ...

Q.88 In a two wattmeter method of measuring power in 3 phase system, one of the wattmeter reads negative, implyingAns A. Load is unbalancedB. Power factor is less than 0.5C. Wattmeter connection is failureD. Power flow is in ...

Q.92 A freewheeling diode in a phase controlled rectifier:Ans A. Improves the line power factorB. Is responsible for additional harmonicsC. Enables the inverter operationD. Is responsible for additional reactive powerCorrect Ans Provided: A

Q.86Ans A.B.C.D.Correct Ans Provided: C

Q.82Ans A.B.C.D.Correct Ans Provided: C

Q.89 How many numbers of coils will be there in a dynamo type power factor meter for balance three phase load?Ans A. Two current coil and one pressure coilB. One current coil and one pressure coilC. Three current ...

Q.78 The magnetic flux density is:Ans A.B.C.D.Correct Ans Provided: A

Q.80 Which of the following is the function of feedback diodes in McMurray inverter?Ans A. To provide required reverse bias across the outgoing thyristorB. To provide the return path for the reactive current of loadC. To provide the ...

Q.72 6Ans A.B.C.D.Correct Ans Provided: A

Q.75Ans A.B.C.D.Correct Ans Provided: A