Related Questions

A transformer can have zero voltage regulation at
A leading power factor
B lagging power factor
C unity power factor
D zero power factor
A good voltage regulation of a transformer means
A output voltage fluctuation from no load to full load is least
B output voltage fluctuation with power factor is least
C difference between primary and secondary voltage is least
D difference between primary and secondary voltage is maximum
Which of the following is the main advantage of an auto-transformer over a two-winding transformer?
A Eddy losses are totally eliminated
B Copper losses are negligible
C Saving in winding material
D Hysteresis losses are reduced
The output transformer used in a power amplifier is a ___________ transformer
A 1:1 ratio
B Step-up
C Step-down
D None of the above
The changes in volume of transformer cooling oil due to variation of atmospheric tem-perature during day and night is taken care of by which part of transformer
A Conservator
B Breather
C Bushings
D Buchholz relay
Which of the following is the main advantage of an auto-transformer over a two winding transformer?
A Hysteresis losses are reduced
B Saving in winding material
C Copper losses are negligible
D Eddy losses are totally eliminated
Power amplifiers generally use transformer coupling because transformer per-mits
A Cooling of the circuit
B Impedance matching
C Distortionless output
D Good frequency response
City B is 5 miles east of city A. City C is 10 miles southeast of city B. Which of the following is the closer to the distance from City A to City C?
A 11 miles
B 12 miles
C 13 miles
D 14 miles
Health experts say people still need moderate to vigorous exercise, which has been shown to reduce risks of cardiovascular disease and other disorders. Which of the following is closer in meaning to vigorous?
A Lethargic
B Sluggish
C Lengthy
D Energetic
There is a point in a circle. What is the probability that this point is closer to its circumference than to the center?
A 34

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