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By Basic Electrical Mcqs 2 Comments

The voltage induced in an inductor is represented as,

A. product of its inductance and current through it.
B. ratio of its inductance to the current through it.
C. ratio of the current through it to its inductance.
D. product of its inductance and rate of change of current through it.

The instantaneous voltage across the inductor is expressed as the product of inductance and a rate of change of current through it as it doesn’t allow any certain change of current through it. Voltage induced in an inductor is written as

Related Mcqs:

  1. A series resonant band-stop filter consists of a 68 Ω resistor, a 110 mH coil, and a 0.02 µF capacitor. The internal resistance, RW, of the coil is 4 Ω. Input voltage is 200 mV. Output voltage is taken across the coil and capacitor in series. What is the output voltage magnitude at f0?

    A. 1.1 mV
    B. 11.1 mV
    C. 111 mV
    D. 200 mV

  2. A series resonant band-pass filter consists of a 2 mH coil, a 0.005 µF capacitor, and a 120 Ω resistor. The winding resistance of the coil is 12 Ω. The output voltage is taken off the resistor. Input voltage is 12 Vrms. What is the output voltage magnitude at the center frequency (f0)?

    A. 10.9 V
    B. 1.09 V
    C. 1.1 V
    D. 12 V

  3. Instantaneous power in inductor is proportional to the

    A. product of the instantaneous current and rate of change of current.
    B. square of instantaneous current.
    C. square of the rate of change of current.
    D. Temperature of the inductor.

  4. Power dissipation in ideal inductor is

    A. Maximum
    B. Minimum
    C. Zero
    D. A finite value

  5. Inductor does not allow the sudden change of

    A. current
    B. voltage
    C. power
    D. None of the above

  6. In voltage divider bias, VCC = 25 V; R1 = 10 kO; R2 = 2.2 V ; RC = 3.6 V and RE =1 kO. What is the emitter voltage?

    A. 7 V
    B. 3 V
    C. V
    D. 8 V

  7. A voltage divider consists of two 68 kΩ resistors and a 24 V source. The unknown output voltage is______________?

    A. 12 V
    B. 24 V
    C. 0 V
    D. 6 V

  8. A certain voltage divider consists of two 12 kΩ resistors in series. Which of the following load resistors will have the most effect on the output voltage?

    A. 1 MΩ
    B. 24 kΩ
    C. 18 kΩ
    D. 12 kΩ

  9. At a certain frequency, the output voltage of a filter is 6 V and the input is 12 V. The voltage ratio in decibels is_____________?

    A. 6.02 dB
    B. -6.02 dB
    C. 12.04 dB
    D. -12.04 dB

  10. In a certain low-pass filter, fc = 3.5 kHz. If the input voltage is a 6 V sine wave with a dc level of 10 V, what is the output voltage magnitude?

    A. 0 V
    B. 5.97 V
    C. 6 V
    D. 597 mV

The correct answer to the question: "The voltage induced in an inductor is represented as," is "product of its inductance and rate of change of current through it.".

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