Power transformers should be designed to have maximum efficiency
A) at one-fourth load
B) at one-half load
C) at or near full load
D) any of the above
Correct Answer:
Verified
Q3: are always double layer type.
A)Closed windings
B)Open windings
C)Either
Q4: The distance between the starts of two
Q5: The winding where dummy coils are used
Q6: Dummy coil should not be used in
A)small
Q7: Power transformers have rating
A)equal to 50 kVA
B)equal
Q9: In transformers using hot rolled steel, the
Q10: Yokes with rectangular cross-section are used for
A)small
Q11: The cold rolled grain oriented steel has
Q12: Cylindrical windings using circular conductors, employed in
Q13: Helical windings are used in
A)distribution transformers
B)power transformers
C)shell
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