1131. The power factor of a transformer on no-load is poor due to :

A. Magnetizing reactance of the transformer *
B. Open-circuited secondary
C. Low primary winding resistance
D. Low no-load current

1132. Essential twisting of transformer contains two indistinguishable windings in equal. Assuming one winding is eliminated, polarizing current will be :

A. Balved
B. The same
C. Doubled*
D. Increased four times

1133. The center motion of a pragmatic transformer with an obstruction load:

A. Is totally consistent with load changes *
B. Increases linearly with load
C. Increases as the square root of the load
D. Decreases with increase of load

1134. The inductive reactance of a transformer depends on:

A. Electromotive force
B. Magnetomotive force
C. Magnetic flux
D. Leakage flux *

1135. The flux in transformer core:

A. Increases with load
B. Remain constant irrespective of load *
C. Decreases with load
D. None of the above

1136. The mutual flux in a loaded transformer can be varied by braying :

A. Primary current
B. Load impdance
C. Secondary current
D. Reluctance of the magnetic path *

1137. The primary ampere-turns are counter balanced by :

A. Secondary ampere turns *
B. Primary flux
C. Increase in mutual flux
D. Increase in secondary current

1138. In a transformer _______ decrease with the increase in leakage flux :

A. Primary induced emf
B. Secondary induced emf
C. Secondary terminal voltage *
D. None of the above

1139. Power transformed from primary to secondary depends upon:

A. Number of primary turns
B. Number of secondary turns
C. Current transformation ratio
D. Attractive coupling among essential and auxiliary windings *

1140. A transformer is providing unadulterated resistive (solidarity pf) load. The power factor on essential side will be :

A. 0.95 (Lead)
B. About 0.95 (lag) *
C. Zero
D. Unity