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  • Question

  • The turn on characteristics of a power transistor can be assumed to be linear, as shown in the below figure . During turn on time T, voltage reduces linearly from V to 0 and current rises linearly from 0 to I. The energy loss during time T is
    The turn on characteristics of a power transistor can be assumed to be linear, as shown in the below


  • Options
  • A. VIT
  • B. The turn on characteristics of a power transistor can be assumed to be linear, as shown in the below
  • C. The turn on characteristics of a power transistor can be assumed to be linear, as shown in the below
  • D. The turn on characteristics of a power transistor can be assumed to be linear, as shown in the below

  • Correct Answer
  •  

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    • Options
    • A. True
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    • Options
    • A. True
    • B. False
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    • 3. Slotted line can be used for measurement of high frequencies

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    • A. True
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    • 4. A line of length slightly less than and short circuited at far end behaves as

    • Options
    • A. inductance L
    • B. capacitance C
    • C. L and C in series
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    • 5. At 0 K, silicon and germanium behave like monoatomic crystals.

    • Options
    • A. True
    • B. False
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    • 6. Assertion (A): For a solenoid having N turns, .

      Reason (R): For all magnetic materials, B increases linearly with I.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
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    • 7. A ring counter with 5 flip flops will have

    • Options
    • A. 5 states
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    • 8. A telephone exchange has 9000 subscribers. If the number of calls originating at peak time is 10, 000 in one hour, the calling rate is

    • Options
    • A. 0.9
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    • C. 0.81
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    • Options
    • A. is decreased
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    • 10. In directional coupler of the given figure, the terms |S14| and |S23| of scattering matrix are nearly

    • Options
    • A. 1 each
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