Related Questions

A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
A Is increased
B Is decreased
C Does not change
D Momentarily goes to zero
A capacitor and a resistor are connected in series to a sine wave generator. The frequency is set so that the capacitive reactance is equal to the resistance and, thus, an equal amount of voltage appears across each component. If the frequency is increased
A VR > VC
B VC > VR
C VR = VC
D VR and VC = 0
An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then
A VR = VL
B VL
C VL = VR
D VL > VR
While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is
A Short-circuited
B Open circuited
C Alright
D Leaky
The purpose of emitter capacitor (i.e. capacitor across RE) is to ___________
A Avoid voltage gain drop
B Forward bias the emitter
C Reduce noise in the amplifier
D None of the above
The period of a sine wave is ___________ seconds. Its frequency is
A 20 Hz
B 30 Hz
C 40 Hz
D 50 Hz
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance decreases
A True
B False
When the frequency of the voltage applied to a series RL circuit is decreased, the impedance
A Decreases
B Increases
C Does not change
D Cannot be determined without values
When the frequency of the voltage applied to a series RC circuit is decreased, the impedance
A Increases
B Decreases
C Remains the same
D Doubles
For given applied voltage, with the increase in frequency of the applied voltage
A eddy current loss will decrease
B eddy current loss will increase
C eddy current loss will remain unchanged
D none of the above

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