Earthing Safety Trivia Quiz
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Earthing is the electrical connection of the mains to the earth's conductive system. It is a necessary procedure that ensures safety from electrical misfirings during lightening and sparks. Earthing is unavoidable in electrical installation for industrial plants, mines, and residential buildings. How much do you know about this?
- 1.Which of these serves more purposes other than electrical safety?
- A.
Single earthing
- B.
Double earthing
- C.
Functional earthing
- D.
Power earthing
- 2.Which of these devices uses functional earth connections?
- A.
Circuit breaker
- B.
Surge suppressor
- C.
Fuse
- D.
Electric sockets
- 3.What must be kept low to ensure voltage on exposed surfaces is not too high?
- A.
Impedance
- B.
Inductance
- C.
Current
- D.
Power
- 4.Which of these is not a method of shorting?
- A.
Spark gaps
- B.
Discharge tubes
- C.
Option 3
- D.
Bridge-type semiconductors
- 5.Which of these does not support electromagnetic interference to prevent shocks?
- A.
Electrostatic coupling
- B.
Ignition systems
- C.
Electromagnetic induction
- D.
Conduction
- 6.Which of these involves using the surge protector to limit voltage supplied to a device?
- A.
Blocking
- B.
Shorting
- C.
Powering
- D.
Impedance
- 7.How many types of wire system are installed in a modern house?
- A.
Four types
- B.
Three types
- C.
Six types
- D.
Five types
- 8.Which of these is not a wiring system in a modern house?
- A.
Live
- B.
Ground
- C.
Line
- D.
Neutral
- 9.Which of these electric systems does not use surge protection?
- A.
Process control systems
- B.
Communication systems
- C.
Bioresources systems
- D.
Industrial systems
- 10.What voltage causes safety devices to short?
- A.
Clamping voltage
- B.
Shorting voltage
- C.
Threshold voltage
- D.
Quantal voltage
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