Electrical Machine Design MCQ Questions & Answers | Electrical Engineering

A. 200 to 400 r.p.m.

B. 600 to 1000 r.p.m.

C. 1000 to 1500 r.p.m.

D. 2000 to 2500 r.p.m.

A. 0.5 to 0.8 Wb/m²

B. 0.8 to 1.0 Wb/m²

C. 1.1 to 1.35 Wb/m²

D. 1.4 to 1.8 Wb/m²

A. battery

B. permanent magnet D.C. generator

C. A.C. generator

D. any of the above

A. equal to that of armature mmf

B. less in comparison with the armature mmf

C. large in comparison with the armature mmf

D. none of the above

A. light load or friction

B. lag and creep

C. overload and voltage compensation

D. temperature compensation

E. all of the above

A. 1.0 to 1.2 A/mm²

B. 1.5 to 2.0 A/mm²

C. 2.2 to 3.2 A/mm²

D. 3.2 to 4.2 A/mm²

A. temperature error

B. wave shape error

C. frequency error

D. all of the above

A. potential transformers

B. current transformers

C. both (A) and (B)

D. power transformers

A. as long as possible

B. as short as possible

C. neither too small not too large

D. very thick

A. between 2 to 4

B. between 6 to 8

C. between 9 to 16

D. between 20 to 30