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
Commercial available medium size machines have a speed range of __________ ? Read More »
Electrical Machine Design 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
The change in flux linkages can be caused in which of the following ways ? Read More »
Electrical Machine Design 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
impose limitation on design____________? Read More »
Electrical Machine Design 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
