A. low melting point and high specific resistance
B. low melting point and -low specific resistance
C. high melting point and low specific resistance
D. low melting point and any specific resistance
Answer: Option B
This Question Belongs to Electrical Engineering >> Switchgear Protections
Magnetic circuit breaker has ______ trip action.
A. delayed
B. instantaneous
C. both of the above
D. none of the above
In a circuit breaker the basic problem is to
A. maintain the arc
B. extinguish the arc
C. transmit large power
D. emit the ionizing electrons
The arcing contacts in a circuit breaker are made of
A. copper tungsten alloy
B. porcelain
C. electrolytic copper
D. aluminium alloy
Air blast circuit breaker is used for
A. over currents
B. short duty
C. intermittant duty
D. repeated duty
Option A is correct
High specific resistance means it will not allow large amounts of current to flow through the circuit.
a
Correct Ans is option :- A
Because a fuse wire should have low melting point and high specific resistance.
Please correct your answer.
Correct ans is option a that is a fuse wire should have high specific resistance and low melting point..
Please check once your correct option..
Fuse element must have low melting point and high conductivity. or low resistivity.
Kindly correct your answer