• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

How Engineering Works

  • Home
  • About Us
  • Electrical Engineering
    • Interview Questions
  • Privacy Policy
  • Disclaimer
  • Contact Us
  • Blog

MCQ on Basic Electronics – 1

May 17, 2017 by admin

« Back         CONTENTS          Next »

 1. The capacitors used in filter circuits of power supplies having output voltage more then 450 V mainly are
(a) ceramic capacitors.
(b) electrolytic capacitors.
(c) mica capacitors.
(d) paper capacitors.

Answer ⇓

           D 

 2. For the normal operation, a varactor diode is always
(a) forward biased.
(b) reverse biased.
(c) needed to input supply.
(d) none of the above.

Answer ⇓

           B 

 3. If current flowing through a circuit or device increases as the applied voltage is increased, we say that the circuit or device has
(a) inductive nature.
(b) capacitive nature.
(c) positive resistance.
(d) negative resistance.

Answer ⇓

           C 

 4. Varactor diode act as a
(a) variable capacitor.
(b) voltage regulator.
(c) rectifier.
(d) all of the above.

Answer ⇓

           A 

 5. Voltage power supplies use a high resistance across the output of the supply. That resistance is called
(a) high Voltage resistors.
(b) potentiometers.
(c) bleeder resistors.
(d) holding resistors.

Answer ⇓

           C 

 6. Sometime a capacitor is placed in series with the primary of a transformer because
(a) it reduce the ripples in signal.
(b) it raises the power factor of the circuit.
(c) it reduced the noise level.
(d) all of the above.

Answer ⇓

           B 

 7. The capacitors used in filter circuits of power supply having output voltage less than 100 V are
(a) paper capacitors.
(b) ceramic capacitors.
(c) electrolytic capacitors.
(d) variable capacitor.

Answer ⇓

           C 

 8. The common collector collection of a transistor has
(a) very high output resistance.
(b) very low input resistance.
(c) very high input resistance.
(d) none of the above.

Answer ⇓

           C 

 9. The common emitter transistors are used for
(a) high frequency applications.
(b) audio frequency applications.
(c) impedance Matching.
(d) none of the above.

Answer ⇓

           B 

 10. Input resistance of a common base transistor is
(a) zero.
(b) low.
(c) high.
(d) very high.

Answer ⇓

           B 

 11. The common collector transistor are used for
(a) high frequency applications.
(b) audio frequency applications.
(c) low frequency applications.
(d) impedance Matching.

Answer ⇓

           D 

 12. The common base transistors are used for
(a) high frequency applications.
(b) audio frequency applications.
(c) low frequency applications.
(d) impedance Matching.

Answer ⇓

           A 

 13. Vacuum tubes are preferred for the amplification of
(a) low power signals.
(b) low frequency signals.
(c) audio frequency signals.
(d) high power and high frequency signals.

Answer ⇓

           D 

 14. In cutoff state, the collector current in a transistor is
(a) approximately zero.
(b) low.
(c) high.
(d) approaches infinity.

Answer ⇓

           A 

 15. What happened to the base current if base of a transistor is made thick?
(a) base current will decrease.
(b) base current will remain same.
(c) base current will increase.
(d) base current will zero.

Answer ⇓

           C 

« BACK                                        NEXT »


Also Read :

  • Why all the voltage levels are multiples of 11 kV? asked by Bahu
  • What is the function of a choke in tube light? asked by varu
  • What is the difference between Earthing and Grounding? asked by admin
  • What is the meaning of DYN11 in a transformer? asked by Hiter


INTERVIEW QUESTIONS

MCQ or Objective




Filed Under: Electrical MCQ

Primary Sidebar


MCQ on Basic Electrical


MCQ on Electrical Circuit Theory 


MCQ on Electrical Devices 


MCQ on Measuring Instruments 


MCQ on Engineering Materials 


MCQ on Power Generation 


MCQ on Switchgear and Protection  


MCQ on DC Machine 


MCQ on DC Generator 


MCQ on DC motor 


MCQ on Special Motor 


MCQ on Alternator 


MCQ on Synchronous Motor 


MCQ on Induction Motor 


MCQ on Transformer 


MCQ on Transmission and Distribution 


MCQ on Underground Cables



INTERVIEW QUESTIONS

MCQ or Objective





Recommended Post

MCQs on DC motor

Top electrical engineering interview questions

Electric Faults

Electrical Engineering Interview Questions

MCQ on Transmission and Distribution – 8

Categories

  • Electrical Articles (19)
  • Electrical MCQ (75)
  • Electrical Questions (11)
  • Interviews Questions (7)
  • IQ Test (1)
  • Uncategorized (12)

Join Our Whatsapp Group


About Us | Privacy Policy | Disclaimer


Copyright@2017-2022