Top 80+ Solved Power Quality and Management MCQ Questions Answer
Q. The Transients in the power system occurs for
a. less than two complete cycles
b. exact two complete cycles
c. less than one complete cycles
d. exact one complete cycles
Q. The most common cause of long interruption is ______
a. Faults
b. Outages
c. Both (a) & (b)
d. none of the above
Q. Outage is the
a. Removal of Primary Component
b. (b) No Power Generation
c. Transmission Faults
d. (d) None of the above
Q. Single Phase Tripping is generally used in _________________.
a. Transmission System
b. Distribution System
c. Low Voltage System
d. Generation System
Q. The Short Interruptions occurs for
a. Less than two complete cycles
b. exact two complete cycles
c. less than one complete cycles
d. exact one complete cycles
Q. The most common way to calculate voltage sag is from ______
a. Average Voltage
b. Peak Voltage
c. RMS Voltage
d. none of the above
Q. Effect of temperature rise in overhead lines is to
a. Increase Sag Decrease Tension
b. Decrease Sag Increase Tension
c. Increases both
d. Decreases Both
Q. What should be the value of sag for proper operation of overhead transmission line?
a. High
b. Low
c. Neither too low nor too high
d. Anything
Q. Voltage dips cannot be caused by which of the following:
a. Switching on of Large Loads
b. Local and Remote faults
c. Inductive Loading
d. Capacitive Switching
Q. Which one of the following cannot be possible with voltage surges:
a. Damaging to insulation
b. Tripping of Sensitive Equipment
c. Flicker in Incandescent Lamps
d. Damage to electronic components
Q. During sag, power electronic component will trip, this will decrease ______
a. Load Voltage
b. Supply Voltage
c. Load Current
d. none of the above
Q. The total power taken by the load remains constant so that _____ will be higher
a. Current
b. Voltage
c. Fluctuations
d. Harmonics
Q. The major cause of voltage sag is
a. Malfunction of primary component
b. Equipment Failure
c. Starting of large Induction Machine
d. All the above
Q. To obtain a constant current input, a inductor is placed in current source inductor(CSI) in:
a. Parallel
b. Series
c. Both Series and Parallel
d. Not placed at all
Q. The harmonic current distortion in adjustable speed drive is_____
a. Constant
b. Not Constant
c. High
d. low