Related Questions

A Circuit having power factor of 0.8 consumes 40W. The value of reactive power (VAR) is-
A 20
B 40
C 30
D 10
The power factor indicates how much of the apparent power is reactive power.
A True
B False
At __________ frequencies the parallel R-L circuit behaves as purely resistive.
A Low
B Very low
C High
D Very high
In a pure resistive circuit
A Current lags behind the voltage by 90°
B Current leads the voltage by 90°
C Current can lead or lag the voltage by 90°
D Current is in phase with the voltage
At parallel resonance, the net reactive component circuit current is ___________
A Capacitive
B Zero
C Inductive
D None of the above
At series resonance, the net reactive component of circuit current is ___________
A Zero
B Inductive
C Capacitive
D None of the above
Which of the following resistive materials has the lowest temperature co-efficient of resistance ?
A Nichrome
B Constantan
C Kanthal
D Molybdenum
In deriving ac equivalent circuit for an amplifier circuit we short circuit
A All resistors
B All transistors
C All inductors
D All capacitors
Most modern TV's draw power even if turned off. The circuit the power is used in does what function?
A Sound
B Remote control
C Color balance
D High voltage
Total power in a parallel circuit is found by adding up the power of all the individual resistors.
A True
B False

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