Power System Protection MCQs Part 1
Power System Protection MCQs Part 1.
Contents
The production of arc in circuit breaker
a. The production of arc in circuit breaker:
- Delays the current interruption process
- Generates enormous heat
- Both of these
- None of these
Correct answer: 3. Both of these
The basic requirement of any power system protection scheme is
b. The basic requirement of any power system protection scheme is:
- Selectivity
- Stability
- Speed
- All of these
Correct answer: 4. All of these
The incipient fault in beginning is
c. The incipient fault in beginning is:
- Small
- Fatal
- Infinitely damage to the equipment
- more dangerous than P – P fault
Correct answer: 1. Small
Most dangerous type of fault on any power system is
d. Most dangerous type of fault on any power system is:
- Phase to earth
- Phase to Phase
- Phase to Phase to Earth
- Three phase fault
Correct answer: 3. Three phase fault
Reactance in any system exists due to
e. Reactance in any system exists due to:
- Resistors
- Capacitors
- Inductors
- 2 & 3
Correct answer: 4. 2 & 3
Cartridge type fuse can handle current upto
f. Cartridge type fuse can handle current upto:
- 50,000 A
- 1,00,000 A
- 2,00,000 A
- 5,00,000 A
Correct answer: 2. 1,00,000 A
The major advantage associated with the fuse is
g. The major advantage associated with the fuse is:
- It is cheaper to use
- It requires no special maintenance
- Its time or operation is shorter than CB’s
- All of these
Correct answer: 4. All of these
The modern electrical power systems are more likely to use
h. The modern electrical power systems are more likely to use:
- Electromechanical relays
- Static analog relays
- Static digital relays
- None of these
Correct answer: 3. Static digital relays
Air circuit breakers can be used for current values up to
i. Air circuit breakers can be used for current values up to:
- 3000 A
- 6000 A
- 18000 A
- 32000 A
Correct answer: 2. 6000 A
The protection system which compares the current entering and leaving the protection zone
j. The protection system which compares the current entering and leaving the protection zone:
- Different protection system
- Integral protection system
- Back protection system
- Subtraction protection system
Correct answer: 1. Different protection system
Continue reading:
- Power System Protection MCQs Part 1
- Power System Protection MCQs Part 2
- Power System Protection MCQs Part 3
- Power System Protection MCQs Part 4
- Power System Protection MCQs Part 5
- Power System Protection MCQs Part 6
- Power System Protection MCQs Part 7
- Power System Protection MCQs Part 8
- Power System Protection MCQs Part 9
- Power System Protection MCQs Part 10
- Power System Protection MCQs Part 11
- Power System Protection MCQs Part 12