check

MCQ's Electrical Transient In Power Systems

 If you think you have a good understanding of Electrical Transient In Power Systems,  challenge yourself and take our quiz. 

Best of Luck.!!

Start

Question 1 of 15

What does the word transient mean?

A

Something that lasts for a long time

B

Something that lasts for a short time

C

Something that lasts in between short and long time

D

None of the above

Question 2 of 15

The duration of electrical transient is:

A

Greater than milliseconds

B

Less than microseconds

C

Few milliseconds

D

Both b and c

Question 3 of 15

Electrical transient follows the path:

A

High resistance to ground

B

Least resistance to ground

C

None of the above

Question 4 of 15

Which statement is correct for transient produce by internal source?

A

Voltage rise is 2 to 3 times the original voltage

B

Surge is of small magnitude

C

Surge is of large magnitude

D

Both a and b

Question 5 of 15

The following source is not an external source that can cause an electrical transient:

A

Line/cable switching

B

Arc (welding)

C

Transformer switching

D

Current limiting fuse operation

Question 6 of 15

The following source is not an internal source that can cause an electrical transient: 

A

Power electronic operation

B

Electrostatic discharge

C

Copy machines

D

Lighting

Question 7 of 15

How many types of transient are there according to IEEE 1159-2019 standard:

A

Two

B

Three

C

Four

D

Five

Question 8 of 15

An oscillatory transient is classified as a sudden and non-power frequency change in the voltage or current or both, which is ____ in polarity:

A

Bidirectional

B

Unidirectional

C

None of the above

Question 9 of 15

Which way can transient cause damage to the equipment:

A

Dielectric breakdown

B

Fracture

C

Surpassing dV/dt and dI/dt limits

D

All of the above

Question 10 of 15

The following devices are especially susceptible to damage from voltage transients :

A

Microprocessor-based

B

Programmable logic control

C

Both a and b

D

None of the above

Question 11 of 15

The influence of voltage transients on electronic equipment consist of ____ categories :

A

Two

B

Three

C

Four

D

Five

Question 12 of 15

Intermittent interruption occurs when a transient event is injected into:

A

DC system

B

AC system

C

Data or control network

D

None of the above

Question 13 of 15

_______ is used to protect transmission lines against lightning strikes.

A

Earthing screen

B

Ground wire

C

Lighting arresters

D

None of the above

Question 14 of 15

To protect power station and substation equipment against lightning strikes, we use:

A

Earthing screen

B

Ground wire

C

Lighting arresters

D

None of the above

Question 15 of 15

Lightning Arrester is used to protect :

A

Surges that may reach the equipment terminals

B

Surges far from equipment terminals

C

Both a and b

D

None of the above

Confirm and Submit