A:-1 metric meter
B:-1 meter
C:-1 feet
D:-1 cubic meter
Correct Answer:- Option-B
Question59:-The active recovery voltage depends on
A:-Power factor
Armature reaction
C:-Circuit condition
D:-All the above
Correct Answer:- Option-D
Question60:-The highest current that a circuit breaker is capable of breaking at recovery and re striking voltage is
A:-Breaking capacity
B:-Making capacity
C:-Recovery current
D:-recovery voltage
Correct Answer:- Option-A
Question61:-Circuit breaker intended for rapid auto re closing with rated operating duty o-m-co in which m represents
A:-Making
B:-Breaking
C:-Dead time
D:-Re closing
Correct Answer:- Option-C
Question62:-The heat produced by an electric heating element is according to
A:-Ohm's law
B:-Stefan's law
C:-Snell's law
D:-Faraday's law
Correct Answer:- Option-B
Question63:-Ajax Wyatt furnace make use of a crucible in
A:-Horizontal
B:-At an angle of 120°
C:-Vertical
D:-None of the above
Correct Answer:- Option-C
Question64:-High frequency capacitance heating method is employed for heating
A--Plastic
B:-Wood
C:-Dehydration of foods
D:-All the above
Correct Answer:- Option-D
Question65:-in carbon arc welding the carbon electrode with respect to work is
A:-Negative
B:-Positive
C:-As positive or negative
D:-Non of the above
Correct Answer:- Option-A
Question66:-The filament lamp work at a pf of
औ:-5
8:-1
0-7
0:-0
Correct Answer:- Option-B
Question67:-Which lamp has the highest luminous efficiency
A:-Filament
B:-Neon
C:-Mercury vapor
D:-Sodium vapor
Correct Answer:- Option-D