Electrical Machine Design

A. Silver
B. Steel
C. Aluminium
D. Copper

A. Cast steel
B. Aluminium
C. Soft steel
D. Cast iron

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. The flux is constant with respect to time and is stationary and the coil moves through it
B. The coil is stationary with respect to flux and the flux varies in magnitude with respect to time
C. Both the changes mentioned above occur together, i.e., the coil moves through a time varying field
D. All of the above

A. Induction
B. Interaction
C. Alignment
D. All of the above

A. d.c. series motor .
B. d.c. shunt motor
C. induction motor
D. synchronous motor

A. low
B. medium
C. high
D. any of the above

A. Saturation
B. Temperature rise
C. Efficiency
D. Power factor
E. All above

A. drastically increased
B. drastically reduced
C. unaffected
D. none of the above

A. small size
B. medium size
C. large size
D. any of the above