Electrical Engineering MCQs on Power System Protection Part 31
Contents
The short circuit in any winding of the transformer is the because of
The short circuit in any winding of the transformer is the because of
- Impulse voltage
- Insulation failure
- Loose connection
- Mechanical vibration
Correct answer: 1. Impulse voltage
Overload relays are of
Overload relays are of
- Induction type
- Solid state type
- Thermal type
- All of these
Correct answer: 4. All of these
To reduce short circuit fault currents the equipment used is
To reduce short circuit fault currents the equipment used is
- Capacitor
- Reactor
- Resistor
- None of these
Correct answer: 2. Reactor
Overheating of relay contacts or contact born out is because of
Overheating of relay contacts or contact born out is because of
- Foreign matter on the contact surface
- Slow making and breaking of load circuit contacts
- Too low contact pressure
- All of these
Correct answer: 4. All of these
A fuse is never inserted in
A fuse is never inserted in
- Negative of DC circuit
- Neutral wire
- Phase wire
- Positive of DC circuit
Correct answer: 2. Neutral wire