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Q1. The major cause of voltage sag is A. Malfunction of primary component B. Equipment Failure C. Starting...

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Electrical Engineering

Q1. 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
Q2. What should be the value of sag for proper operation ofoverhead transmission line?
A. High
B. Low
C Neither too low nor too high
D. Anything
Q3. The harmonic current distortion in adjustable speed drive is__________.
A. Constant
B. Not Constant
C High
D. Low
Q4. Reducing the number of short-circuit faults in a system,reduces
A. Sag
B. Interruptions
C Sag & Interruptions
D. None of the above
Q5. During normal operation, the UPS takes its power from thesupply, rectifies the ac voltage to dc and inverts it again to acwith the
A. Same frequency and rms value
B. Different frequency and rms value
C Same frequency and different rms value
D. Different frequency and same rms value

Answer & Explanation Solved by verified expert
4.0 Ratings (463 Votes)
1 answer option D all the above The main cause of voltage sag is Malfunction of primary component Due to insufficiently tightenend box screws on power conductors it leads to increase the system impedance and exaggegerates the cuffct f current increases Equipment failure Fault will be quickly removed by fuse or circuit breaker they will drag the voltage down until the protective device    See Answer
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