Q.19 The electrical earthing is done with the help of ____.Ans A. Low resistance wire connected between non carrying current part of the equipment and groundB. Low resistance wire connected between phase wire and groundC. High resistance wire ...
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Q.18 For maximum power transfer from source to 5-j2 ohm of load, the source impedance will be ____.Ans A. 5+j2 ohmB. -j2 0hmC. J2 ohmD. 5 ohmCorrect Ans Provided: A
Q.16Ans A.B.C.D.Correct Ans Provided: C
Q.20 100 V is applied to a circuit where current flow is (10+j5)A. The active power will be ____.Ans A. 500 WB. 1500 WC. 1000 WD. 100 WCorrect Ans Provided: C
Q.17Ans A. Circuit is laggingB. No phase differenceC. Circuit is leadingD. Lagging by 5 degreeCorrect Ans Provided: A
Q.20 The maximum efficiency for half wave rectifier is _____.Ans A. 40.6%B. 81%C. 60%D. 50%Correct Ans Provided: A
Q.17 Sag is ______.Ans A. Directly proportional to the eight times of the tensile strength of the conductorB. Inversely proportional to the tensile strength of the conductorC. Directly proportional to square of the tensile strength of the conductorD. ...
Q.2 A 6 pole, 50 Hz, 3-phase induction motor is running at 950 rpm and has rotor cu loss of 5 kW. The rotor input is ____.Ans A. 50 kWB. 10 kWC. 5 kWD. 100 kWCorrect Ans Provided: ...
Q.12 Coal is used to produce steam for ____.Ans A. Hydro powerB. Thermal powerC. Gas PowerD. Disel EngineCorrect Ans Provided: B
Q.5 How many switches are required for three phase bridge rectifier?Ans A. 4B. 6C. 3D. 2Correct Ans Provided: B
