Q. A difference amplifier using op-amp has closed loop gain = 50. If input is 2 V to each of inverting and non-inverting terminals, output is 5 mA. Then CMRR =

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Q. The coupling capacitor in amplifier circuits

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Q. An ideal op-amp has zero slew rate.

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Q. In a bridge rectifier circuit the rms value of input ac voltage is 10 V. The PIV across each diode is

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Q. In a half wave diode rectifier circuit the current flows in the load circuit for

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Q. In a push pull circuit

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

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Q. The ripple factor of a half wave rectifier is more than 2.

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Q. In a CE amplifier drives a low load resistance directly the result will be

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Q. For high frequencies a capacitor like

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Q. In an amplifier the voltage gain is the ratio of

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Q. A typical value of gm for a FET is about 25 μs.

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Q. A transistor has two p-n junctions. The batteries should be connected such that

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Q. The value of parameter re used in re transistor model

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Q. Assertion (A): In a full wave rectifier output the lowest ac component is at twice the input frequency

Reason (R): In a full wave rectifier, the output waveform consists of half sinusoids

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Q. An op-amp has zero gain for common mode inputs. Then CMRR =

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Q. Assertion (A): Negative feedback reduces the bandwidth of an amplifier

Reason (R): Negative feedback stabilizes the gain of an amplifier

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Q. A 12 kHz pulse wave-form is amplified by a circuit having an Upper cut-off frequency of 1 MHz. The minimum input pulse width that can be accurately reproduced is

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Q. Feedback factor may be less or more than 1.

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Q. An RC oscillator uses

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