Circuit Theory Quiz#4, MCQs

NOTE: Attempt all Questions to see the Result at the bottom of this page.

The Timer has started 10:00

  1. 1)

    In farward biased Characteristics of junction diode, current value is

    • A) i=ISe^V/V
    • B) Is=ie^V/VT
    • C) i=Ise^VT/V
    • D) i=Ise^V/VT

  2. 2)

    A certain transformer has 500 turns in the primary winding and 2500 turns in the secondary winding. The turn ratio is

    • A) 0.5
    • B) 25
    • C) 25v
    • D) 2500

  3. 3)

    A transformer will be out of phase when

    • A) output voltage is 0 degree out of phase with input voltage
    • B) output voltage is 180 degree out of phase with input voltage
    • C) output voltage is 360 degree out of phase with input voltage
    • D) output voltage is same as input voltage

  4. 4)

    If N denotes the total number of nodes, then number of nodal equations in nodal analysis will be

    • A) Number of equations=N-1
    • B) Number of equations=N-1/2
    • C) Number of equations=N
    • D) Number of equations=N-2

  5. 5)

    Using superposition theorem, for a circuit containing independent sources, any remaining current source is

    • A) replaced by capacitor
    • B) replaced by short circuit
    • C) made zero by replacing them by open circuit
    • D) replaced by close circuit

  6. 6)

    The PIV of a half wave rectifier circuit with a shunt capacitor filter is

    • A) 2Vm
    • B) Vm
    • C) Vm/2
    • D) 3Vm

  7. 7)

    Voltage multipliers are usually used in low current high voltage applications e.g

    • A) Stabilizer of refrigerator
    • B) Microcontroller
    • C) Cathode ray tube in television
    • D) Remote control

  8. 8)

    The current flow across the base-emitter junction of a p-n-p transistor consists of

    • A) Mainly electrons
    • B) Equal numbers of holes and electrons
    • C) Mainly holes
    • D) The leakage current

  9. 9)

    The value of Ia for given circuit is

    • A) Ia=Io
    • B) Ia= 3A
    • C) Ia= -3A
    • D) Ia=6v

  10. 10)

    When a diode is reversed biased

    • A) It will act as short circuit
    • B) It will act as an open circuit
    • C) It will act as close circuit
    • D) maximum current flows