Question 1

For which of the following applications motor has to start with high acceleration?

Accepted Answer

A) Oil expeller 
B) Floor mill 
C) Lifts and hoists 
D) Centrifugal pump

Question 2

......... is preferred for automatic drives

Accepted Answer

A) Synchronous motors 
B) Word Leonard controlled DC motors 
C) None of the above 
D) Any of the above

Question 3

The cost of an induction motor will increase as

Accepted Answer

A) horsepower rating increases but r.p.m.decreases 
B) horsepower rating decreases but r.p.m.increases 
C) horsepower rating and operating speed increases 
D) horsepower rating and operating speed decreases

Question 4

While selecting motor for an air conditioner which of the following characteristics is of great importance ?

Accepted Answer

A) Type of bearings 
B) Type of enclosure 
C) Noise 
D) Arrangement for power transmission

Question 5

For crane travel which of the following motors is normally used ?

Accepted Answer

A) Synchronous motor 
B) D.C.differentially compound motor 
C) Ward-Leonard controlled 
D) C.shunt motor

Exam 3: Motor for Various Applications

For which of the following applications motor has to start with high acceleration?

......... is preferred for automatic drives

The cost of an induction motor will increase as

While selecting motor for an air conditioner which of the following characteristics is of great importance ?

For crane travel which of the following motors is normally used ?