In the OTA, the transconductance is controlled by A The ac supply voltage B A bias current C The input signal voltage D The manufacturing process

1575

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In order to handle all combinations of input voltage polarities, a multiplier must have A Four-quadrant capability B Three- quadrant capability C Four inputs D Dual-supply voltages

1375

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When the two inputs of a multiplier are connected together, the device operates as a A Voltage doubler B Square root circuit C Squaring circuit D Averaging circuit

1404

---

Amplitude modulation is basically a A Summing of two signals B Multiplication of two signals C Subtraction of two signals D Non-linear process

1707

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The output of an AM detector goes directly to the A IF amplifier B Mixer C Audio Amplifier D Loudspeaker

1488

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A PLL maintains lock by comparing A The phase of two signals B The frequency of two signals C The amplitude of two signals D None of these

1775

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A good op-amp has A Very high bandwidth B Narrow bandwidth C High selectivity D All of these

1506

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The loss of precision in quantity is called A Down time B Delay C Unavoidable delay D None of these

1500

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The positive clipper can be easily converted into negative clipper by A Reversing diode and changing the polarity of reference voltage B Reversing diode only C Changing the polarity D None of these

3216

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....................... regulator operates the power transistors as high frequency on/off switch. A Series B Short C Switching D None of these

1303

---

How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V

1645

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The magnitude of the gain or integrator transfer function using op-amp is A WR1Cf B -1/WR1Cf C -WR1Cf D 1/WR1Cf

1403

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If R1=R2, then B=0.5, the total time T of square wave in astable multivibrator using op-amp is A T=RC B T=2 RC ln 3 C T=2 RC ln 2 D T=2RC ln (1+ 0.5)

1937

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how to get bearing & winding temperature of an induction motor?

1446

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why odd number of lines used for scanning

1735

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