Design of AC Machines (2170909) MCQs

MCQs of Design of Single-Phase Induction Motors

Showing 21 to 30 out of 56 Questions
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21.

What is the range of the starting torque of shaded pole induction motor?

(a)

2-4
(b)

2-3.5
(c)

1-1.5
(d)

0.2-0.3
Answer:

Option (d)

22.

What type of coils are used for winding the single-phase induction motor generally?

(a)

rectangular coils
(b)

circular coils
(c)

 square coils
(d)

cruciform coils
Answer:

Option (b)

23.

Which of the following is not common between the construction of single-phase & three-phase induction motor?

(a)

Stator winning type
(b)

Centrifugal switch
(c)

electrolytic capacitor
(d)

All of these 
Answer:

Option (d)

24.

In single-phase induction motor. They are concentric, progressive and skein is the type of _________________

(a)

windings
(b)

capacitors 
(c)

centrifugal switch
(d)

starting method 
Answer:

Option (a)

25.

In single-phase induction motor. How are the poles and pitches in the concentric windings?

(a)

single pole, single pitch
(b)

single pole, different pitches
(c)

different pole, single pitch
(d)

different pole, different pitches
Answer:

Option (b)

26.

In single-phase induction motor. What is the form of progressive windings?

(a)

single layer diamond coil windings
(b)

double layer diamond coil windings
(c)

three-layer diamond coil windings
(d)

multilayer diamond coil windings
Answer:

Option (a)

27.

In single-phase induction motor. When is the skein winding made use of?

(a)

when a small amount of relatively small size wire is used
(b)

when a large amount of relatively small size wire is used
(c)

when a large amount of relatively large size wire is used
(d)

when small amount of relatively large size wire is used
Answer:

Option (a)

28.

In single-phase induction motor. Which winding is mostly used winding?

(a)

concentric winding
(b)

progressive winding
(c)

skein winding
(d)

circular winding
Answer:

Option (a)

29.

 What type of operations are used in the starting switches?

(a)

electrical operation
(b)

mechanical operation
(c)

centrifugal operation
(d)

centrifugal operation and mechanical operation
Answer:

Option (d)

30.

What is the formula of the output equation of single-phase induction motor?

(a)

Q=C0 D2L ns
(b)

Q=C0D2L ns 
(c)

Q=D2L nsC0
(d)

Q=D2LC0  ns
Answer:

Option (a)

Showing 21 to 30 out of 56 Questions
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