Question 1 of 10
What is the primary function of a circuit breaker?
A circuit breaker's main purpose is to protect a circuit by breaking the current flow when a fault (overload or short circuit) occurs.
Question 2 of 10
What is a common cause of overloading in an electrical circuit?
Overloading occurs when too much current is drawn by the connected devices, exceeding the circuit's safe operating limits.
Question 3 of 10
What is a short circuit?
A short circuit is a dangerous situation where current bypasses the intended load, leading to excessive current flow.
Question 4 of 10
Which of the following is NOT a method used for arc extinction in a circuit breaker?
Adding more voltage would sustain the arc, not extinguish it. Cooling, high resistance and the use of insulating mediums are methods of arc extinction
Question 5 of 10
What type of circuit breaker is commonly used for arc extinction using SF6 gas?
SF6 (Sulphur Hexafluoride) circuit breakers are specifically designed to utilize SF6 gas for arc quenching due to its excellent insulating properties.
Question 6 of 10
What is the function of the 'tripping curve' in a circuit breaker?
The tripping curve defines the relationship between the fault current and the time it takes for the circuit breaker to trip (open) and interrupt the circuit.
Question 7 of 10
What is the purpose of an Earth Leakage Circuit Breaker (ELCB)?
ELCBs detect and quickly interrupt current flow to ground, which helps prevent electric shock.
Question 8 of 10
Which type of circuit breaker uses a vacuum as the arc interruption medium?
Vacuum circuit breakers utilize a vacuum to extinguish the arc due to the high dielectric strength of a vacuum.
Question 9 of 10
Which of the following circuit breakers is most suitable for residential applications?
MCBs are small, inexpensive, and commonly used in homes and small buildings for overcurrent and short-circuit protection.
Question 10 of 10
What is the purpose of the arc chute in a circuit breaker?
The arc chute helps to quickly extinguish the arc that forms when the circuit breaker opens by confining and cooling the arc.
1 / 10
ABOUT US
For business inquiries, collaboration, guest post, sponsored content, advertisement, jointly work:
Contact us: voltagelabbd@gmail.com