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Study MCQ
Electronics Mechanic
ACTIVE AND PASSIVE COMPONENTS
Set 3
Set 3
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Q4153
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Which meter is used to find the exact resistance value of resistors?
A
Ammeter
B
Volt meter
C
Ohm meter
D
Watt meter
Q4154
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What is the cause of burnt relay contacts?
A
Low contact current
B
Excessive contact current
C
Chatter during a slow release
D
Excessive number of operations
Q4155
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At which condition the cold resistance of the low voltage lamp is measured using ohmmeter?
A
Lamp is ON at 100 Degree Centigrade
B
Lamp is ON at 320 Degree Centigrade
C
Lamp is ON at 400 Degree Centigrade
D
Lamp is OFF at room temperature
Q4156
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What is the result of hysteresis loss in magnetic material?
A
Back emf increases
B
Eddy current decreases
C
Magnetic flux increases
D
Energy loss takes place
Q4157
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What is the phase relationship between the applied voltage and current in the primary of a transformer with open secondary winding?
A
Voltage lags current by 45 Degree
B
Current lags voltage by 90 Degree
C
Voltage leads current by 45 Degree
D
Current leads voltage by 90 Degree
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