Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 7

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A capacitor of capacitance $2 mF$ and resistor of resistance $12 Ω$ are connected in series with voltage source $V = (195 \sqrt{2} volts)$ $[\sin (100 rad s^{- 1}) t] .$ The average power dissipated in the circuit will be

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Important Questions on Alternating Current

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 8

In an

A C

circuit as shown in the figure, the source is of

r m s

voltage

200 V

and variable frequency. At resonance, the circuit
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 9

A current of

2 A

is flowing at

220 V

in the primary coil of a transformer. If current in the secondary coil is

1 A

and efficiency of the transformer is

80 %

then the voltage produced in the secondary coil will be

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 10

In an

L - C

oscillation maximum charge on capacitor can be

Q_{0} .

If at any instant electrical energy is

{(\frac{3}{4})}^{t h}

of the magnetic energy then the charge on capacitor at that instant is

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 11

Choose the correct statement about the choke coil.

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 12

The reading of the A.C. voltmeter in the network shown in figure is (where

V

is in volt)
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 13

An electric bulb rated

100 W, 100 V

has to be operated across

141.4 V, 50 Hz

A C

supply. The capacitance of the capacitor which has to be connected in series with bulb so that bulb will glow with full intensity is

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 14

An inductor and a resistor are connected in series across A.C. supply. Which of the following phasor diagram may be correct?

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 15

Which of the following statement is incorrect about AC circuit?