Electric Drives (3160919) MCQs

MCQs of Multi-quadrant DC drive

Showing 1 to 10 out of 14 Questions
1 2
1.

While selecting an electric motor for a floor mill, which electrical characteristics will be of least significance?

(a)

Running characteristics
(b)

Starting characteristics
(c)

Efficiency
(d)

Braking
Answer:

Option (d)

2.

______________ need frequent starting and stopping of electric motors.

(a)

Paper mills
(b)

Grinding Mills
(c)

Air-conditioners
(d)

Lifts and Hoists
Answer:

Option (d)

3.

Fans, pumps, Blowers are the example of _________ drive

(a)

Fixed speed Drive
(b)

Variable Speed drive
(c)

Servo Drive
(d)

Any of the above
Answer:

Option (a)

4.

Which of the following motors can be used as the part of the control circuit in the robotic application?

(a)

AC series Motor
(b)

Universal Motor
(c)

Servo Motor
(d)

Scharge Motor
Answer:

Option (c)

5.

To save energy during braking

(a)

dynamic
(b)

plugging
(c)

regenerative
(d)

all of the above
Answer:

Option (c)

6.

Which of the following are electrical braking methods ?

(a)

plugging
(b)

dynamic
(c)

regenerative
(d)

all of the above
Answer:

Option (d)

7.

Which braking is not possible in series motor?

(a)
Regenerative braking
(b)

Dynamic braking
(c)

Counter current braking
(d)

Rheostat braking
Answer:

Option (a)

8.

Polarity of supply voltage is reversed in which type of braking?

(a)

Regenerative braking
(b)

Dynamic braking
(c)

Plugging
(d)

 None of thes
Answer:

Option (c)

9.

In industries which electrical braking is preferred?

(a)

Regenerative braking
(b)

Plugging
(c)

Dynamic braking
(d)

None of the above
Answer:

Option (a)

10.

An elevator drive is required to operate in

(a)

one quadrant only
(b)

two quadrants
(c)

three quadrants
(d)

four quadrants
Answer:

Option (d)

Showing 1 to 10 out of 14 Questions
1 2