A. Blowers
B. Conveyors
C. Air compressors
D. Centrifugal pumps
Related Mcqs:
- The ratio of starting torque to full-load torque is least in case of____________?
A. series motors
B. shunt motors
C. compound motors
D. none of the above - The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is______________?
A. 2.36%
B. 4.76%
C. 6.77%
D. 8.84% - Which of the following application requires high starting torque ?
A. Lathe machine
B. Centrifugal pump
C. Locomotive
D. Air blower - Following motor is used where high starting torque and wide speed range control is required?
A. Single phase capacitor start
B. Induction motor
C. Synchronous motor
D. D.C. motor
E. None of the above - Buses, trains, trolleys, hoists, cranes require high starting torque and therefore make use of_____________?
A. D.C. series motor
B. D.C. shunt motor
C. induction motor
D. all of above motors - The losses occurring in a D.C. generator are given below. Which loss is likely to have highest proportion at rated load of the generator ?
A. hysteresis loss
B. field copper loss
C. armature copper loss
D. eddy current loss - For the same H.P. rating and full load speed, following motor has poor starting torque_____________?
A. shunt
B. series
C. differentially compounded
D. cumulativelyc’ompounded - D.C. motor is to a drive a load which is almost nil for certain part of the load cycle and peak value for short duration. We will select this______________?
A. series motor
B. shunt motor
C. compound motor
D. any of the above - The armature torque of the D.C. shunt motor is proportional to____________?
A. field flux only
B. armature current only
C. both A. and B.
D. none of the above - For constant torque drive which speed control method is preferred ?
A. Field control
B. Armature voltage control
C. Shunt armature control
D. Mechanical loading system
