Electronic Devices and Circuits MCQs with answers Page - 42

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Q. A current ratio Ic/Ie of is usually less than one and is called ?

  • (A) beta
  • (B) theta
  • (C) alpha
  • (D) omega

A

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Q. The current gain of a transistor is the ratio of the ?

  • (A) Collector current to emitter current
  • (B) Collector current to base current
  • (C) Base current to collector current
  • (D) Emitter current to collector current

A

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Q. In a transistor, which normal biasing, the ?

  • (A) Emitter junction is high and collector junction has low resistance
  • (B) Emitter junction has low and collector junction has high resistance
  • (C) Both emitter and collector junction have low resistance
  • (D) Both emitter and collector junction have high resistance

A

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Q. In CB configuration, the output VI characteristics of a transistor are drawn by taking ?

  • (A) VCB versus IC for constant IE
  • (B) VCB versus IB for constant IE
  • (C) VCE versus IC for constant IE
  • (D) VCE versus IB for constant IE

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Q. Doping concentration of BJT is high in the ?

  • (A) Emitter region
  • (B) Base region
  • (C) Collector region
  • (D) None of the above

A

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Q. A transistor acts like a diode and a ?

  • (A) Voltage source
  • (B) Current source
  • (C) Resistance
  • (D) Power supply

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Q. For a C-C configuration to operate properly, the collector-base junction should be reverse biased, while forward bias should be applied to which junction ?

  • (A) collector-emitter
  • (B) base-emitter
  • (C) collector-base
  • (D) cathode-anode

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Q. Which is the higher gain provided by a C-E configuration ?

  • (A) voltage
  • (B) current
  • (C) resistance
  • (D) power

A

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Q. The Q point on a load line may be used to determine ?

  • (A) Vc
  • (B) Vcc
  • (C) Vb
  • (D) Ic

A

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Q. The CE amplifier circuit are preferred over CB amplifier circuits because they have ?

  • (A) low amplification factor
  • (B) Larger amplification factor
  • (C) High Input resistance and low output resistance
  • (D) None of these

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