FPSC Assistant Executive Engineer (Electrical) Test

Posted on by Engr. Hamid Ali

Following are some MCQs from the test of Assistant Executive Engineer AXEN test that is held in 2018 by FPSC. You can practice and learn most important MCQs for electrical tests preparation from Here. Download link of the pdf file is at the end of this post.

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FPSC Assistant Executive Engineer test MCQs

  1. When the diode current is large, the bias is
    a. Forward ✓
    b. Inverse
    c. Poor
    d. Reverse
  2. If the series resistance increases in an unloaded Zener regulator, the Zener current
    a. Decreases ✓
    b. Stays the same
    c. Increases
  3. If the load resistance increases in a Zener regulator, the Zener current
    a. Decreases
    b. stays the same
    c. Increases ✓
  4. The device associated with voltage controlled capacitance is a
    a. Light-emitting diode
    b. Photodiode
    c. Varactor diode ✓
    d. Zener diode
  5. To isolate an output circuit from an input circuit, which is the device to use?
    a. Back diode
    b. Optocoupler ✓
    c. Seven-segment indicator
    d. Tunnel diode
  6. If the base supply voltage increases, the Q point moves
    a. Down
    b. Up ✓
    c. Nowhere
    d. Off the load line
  7. The average DC output voltage for a half-wave rectifier is 13.05 V. Average value for a full-wave rectifier will be.
    a. 26.1 ✓
    b. 10
    c. 20.16
  8. The major advantage of a photo-transistor as compared to a photo-diode is its
    a. Response to higher frequencies
    b. AC operation
    c. Increased sensitivity ✓
    d. Durability
  9. When transistors are used in digital circuits they usually operate in the:
    a. active region
    b. breakdown region
    c. saturation and cutoff regions ✓
    d. linear region
  10. Power amplifiers in high frequency applications are mainly used
    a. as a switch
    b. for amplification ✓
    c. none of these
  11. Input impedance of an inverting OP-AMP is
    a. Zero
    b. infinity ✓

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