Switch Gear And Protection Of Power Systems


10 Questions MCQ Test Mock Test Series for Electrical Engineering (EE) GATE 2020 | Switch Gear And Protection Of Power Systems


Description
This mock test of Switch Gear And Protection Of Power Systems for Electrical Engineering (EE) helps you for every Electrical Engineering (EE) entrance exam. This contains 10 Multiple Choice Questions for Electrical Engineering (EE) Switch Gear And Protection Of Power Systems (mcq) to study with solutions a complete question bank. The solved questions answers in this Switch Gear And Protection Of Power Systems quiz give you a good mix of easy questions and tough questions. Electrical Engineering (EE) students definitely take this Switch Gear And Protection Of Power Systems exercise for a better result in the exam. You can find other Switch Gear And Protection Of Power Systems extra questions, long questions & short questions for Electrical Engineering (EE) on EduRev as well by searching above.
QUESTION: 1

For an arcing fault where the arc resistance is significant an impedance or admittance relay will

Solution:

The reach of a reactance relay is unaffected due to the arc resistance while an impedance and admittance relay under reaches.

QUESTION: 2

Kick fuses are used across relay coils to prevent relay operation during

Solution:
QUESTION: 3

There is a problem of high transient over voltages while interrupting

Solution:

High transient over voltages occurs in power system due to formation of capacitance across the breaker poles. These are also called switching over voltages.

QUESTION: 4

 The most suitable circuit breaker for voltages above 220 kV is

Solution:
QUESTION: 5

Match List-I with List-ll and select the correct answer using the codes given below the lists:
List-I
A. Mho relay
B. Reactance relay
C. Simple impedance relay
List-ll
1. Voltage restrained OC relay
2. Direction restrained OC relay
3. Voltage restrained directional relay 

Solution:
QUESTION: 6

Pilot relaying schemes are used for protection of

Solution:

Pilot relaying schemes provide high speed protection for transmission lines.

QUESTION: 7

Relays A and B have to be coordinated on two adjacent line sections as shown in figure below. Zone-1 and Zone-2 settings are indicated on the diagram.

Which of the following indicates correct time setting for zone-2 of relays A and B?

Solution:
QUESTION: 8

 Identify the relays to be provided with directional and non-directional elements in the system shown in figure below.

Solution:
QUESTION: 9

 If the fault current is 2000 A, the.relay setting 50% and the CT ratio is 400/5, then the plug setting multiplier will be

Solution:

Relay operating current,

QUESTION: 10

The percent bias for a generator protection lies between

Solution:

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