A. 1.7 Wb/m2
B. 2.7 Wb/m2
C. 3.7 Wb/m2
D. 4.7 Wb/m2
Related Mcqs:
- Power transformers are generally designed to have maximum efficiency around__________?
A. no-load
B. half-load
C. near full-load
D. 10% overload - Hysteresis loss in a transformer varies as CBmax = maximum flux density) ?
A. Bmax
B. Bmax1-6
C. Bmax1-83
D. B max - The use of higher flux density in the transformer design____________?
A. reduces weight per kVA
B. reduces iron losses
C. reduces copper losses
D. increases part load efficiency - The path of a magnetic flux in a transformer should have______________?
A. high resistance
B. high reluctance
C. low resistance
D. low reluctance - The value of flux involved m the e.m.f. equation of a transformer is____________?
A. average value
B. r.m.s. value
C. maximum value
D. instantaneous value - The leakage flux in a transformer depends upon______________?
A. load current
B. load current and voltage
C. load current, voltage and frequency
D. load current, voltage, frequency and power factor - The path of the magnetic flux in transformer should have____________?
A. high reluctance
B. low reactance
C. high resistance
D. low resistance - Silicon steel used in lamination’s mainly reduces___________?
A. hysteresis loss
B. eddy current losses
C. copper losses
D. all of the above - The maximum efficiency of a distribution transformer is____________?
A. at no load
B. at 50% full load
C. at 80% full load
D. at full load - Which winding of the transformer has less cross-sectional area?
A. Primary winding
B. Secondary winding
C. Low voltage winding
D. High voltage winding
