Electrical Engineering MCQs

Correct answer C. As an inverter

Correct answer A. Phase lead helps to increase the phase margin of the control loop

Correct answer C. Positive

Correct answer A. DC output power to the transformer volt-amp rating required by the secondary

Correct answer D. All of these

Correct answer D. 120 degrees

Correct answer B. RMS value of the ac component of load voltage to the dc voltage

Correct answer C. Root mean square value of voltage and current to its average value

Correct answer D. Turned on by applying a gate pulse and turned off only when the current becomes zero

Correct answer A. Two SCRs connected in reverse parallel

Correct answer D. The former is the forward characteristic and the latter the reverse characteristic

Correct answer D. All of these

Correct answer B. Holding current

Correct answer C. A voltage sensitive load from excessive dc power supply output voltages

Correct answer D. TRIAC

Correct answer D. Does not produce harmonics

Correct answer D. Only A and C

Correct answer C. Square wave

Correct answer D. All of these

Correct answer C. Current sensor in series with IGBT