Q. A transistor with a = 0.9 and ICBO = 10 μA is biased so that IBQ = 90 μA. Then ICQ will be

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Q. A CB amplifier has a = 0.98 and RL = 600 Ω. If IE = 3.5 mA, the current gain is

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Q. funity of an op-amp is about 1 kHz.

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Q. Assertion (A): In an RC coupled amplifier the junction capacitances can be neglected at low frequencies but not at high frequencies

Reason (R): Capacitive reactance is inversely proportional to frequency.

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Q. In a full wave rectifier circuit using centre tapped transformer, the peak voltage across half of the secondary winding is 30 V. Then PIV is

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Q. A class C amplifier has input frequency of 200 kHz. If width of collector pulses is 0.1 μs, duty cycle is

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Q. Output of a phase splitter is

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Q. In a transistor the minimum and maximum values of βdc are 100 and 121. The proper value of βdc to be used to locate Q point is

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Q. The input to an op-amp integrating amplifier is a constant voltage. The output will be

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Q. FET amplifier is more difficult to analyse than BJT amplifier.

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Q. If an amplifier with gain of - 100 and feedback of β = - 0.1 has a gain change of 20% due to temperature the change in gain of the feedback amplifier will be

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Q. A voltage gain of a CE amplifier connected in collector to base configuration is 50. Collector to base resistor RF = 1 kΩ, RC = 4Ω, the O/P resistance R0 =?

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Q. A voltage multiplier circuit, using diodes and capacitors is suitable for

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Q. In a CE amplifier the ac emitter resistance

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Q. The output impedance of an ideal op-amp is

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Q. A virtual ground is a ground for

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Q. As compared to a full wave diode rectifier circuit using centre tapped transformer, the bridge diode rectifier circuit has the main advantage of

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Q. To bypass a 100 ohm emitter resistor at

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Q. In a CE amplifier the dc load line is the same as ac load line when

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Q. If the output current wave shape of class C circuit has a period of 1 μs and a pulse width of 0.006 μs, the duty cycle is

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