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 Multiple Choice QuestionsMultiple Choice Questions

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1.

To get output for the following circuit, the correct choice for the input is,

  • A=1, B=0, C = 0

  • A=1, B=1, C = 0

  • A=1, B=0, C=1

  • A=1, B=0, C=1

3701 Views

2.

Consider the junction diode as ideal. The value of current flowing through AB is,

 
  • 10-2 A

  • 10-1 A

  • 10-3 A

  • 10-3 A

2106 Views

3.

A p-n-p transistor is connected in a common emitter configuration in a given amplifier. A load resistance of 800 ohm is connected in the collector circuit and the voltage drop across it is 0.8 V. If the current amplification factor is 0.96 and the input resistance of the circuit is 192 ohm, the voltage gain and the power gain of the amplifier will respectively be,

  • 3.69,3.84

  • 4,4

  • 4,3.69

  • 4,3.69

3505 Views

4.

If in a p-n junction, a square input signal of 10 V is applied as shown,


then the output across RL will be

606 Views

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5.

Which logic gate is represented by this following combination of logic gates?

  • OR

  • NAND

  • AND

  • AND

969 Views

6.

The Input resistance of silicon transistor 100Ω. Base current is changed by 40 uA which results in a change in collector current by 2 mA. This transistor is used as common-emitter amplifier with a load resistance of 4 kΩ. The voltage gain of the amplifier is

  • 2000

  • 3000

  • 4000

  • 4000

532 Views

7.

To get an output Y = 1 in given circuit which of the following input will be correct



  • A

    B

    C

    1

    0

    0

  • A

    B

    C

    1

    0

    1

  • A

    B

    C

    1

    1

    0

  • A

    B

    C

    1

    1

    0

500 Views

8.

In a CE transistor amplifier, the audio signal voltage across the collector resistance of 2kΩ is 2V. If the base resistance is 1kΩ and the current amplification of the transistor is 100, the input signal voltage is

  • 0.1 V

  • 1.0 V

  • 1 mV

  • 1 mV

433 Views

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9.

C and si both have a same lattice structure, having 4 bonding electrons in each. However, C is insulator whereas Si is an intrinsic semiconductor. This is because

  • in the case of C, the valence band is not completely filled at absolute zero temperature

  • in a case C, the conduction band is partly filled even at absolute zero temperature

  • the four bonding electrons in the case of C lie in the second orbit, whereas in case of Si they lie in the third

  • the four bonding electrons in the case of C lie in the second orbit, whereas in case of Si they lie in the third

613 Views

10.

The figure shows a logic circuit with two inputs A and B and the output C. The voltage waveforms across A, B and C are as given. The logic circuit gate is

  • OR Gate

  • NOR Gate

  • AND Gate

  • AND Gate

460 Views

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