Basic Electrical Engineering - Electrical Engineering (MCQ) questions and answers
Dear Readers, Welcome to Basic Electrical Engineering multiple choice questions and answers with explanation. These objective type Basic Electrical Engineering questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma.
Specially developed for the Electrical Engineering freshers and professionals, these model questions are asked in the online technical test and interview of many companies.
These tutorial are also important for your viva in university exams like Anna university, Pune, VTU, UPTU, CUSAT etc.
1) Filters are used to convert
- Published on 02 Sep 15
a. Pulsating dc signal into a pure dc signal
b. Pure dc signal into a pulsating dc signal
c. Pulsating dc signal into a pure ac signal
d. Pulsating ac signal into a pure dc signal
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2) The cut - in voltage for silicon and germanium are
- Published on 02 Sep 15
a. 0.3 V, 0.3 V
b. 0.3 V, 0.7 V
c. 0.7 V, 0.7 V
d. 0.7 V, 0.3 V
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3) The P - type semiconductor impurities are also called as
- Published on 02 Sep 15
a. Acceptor impurities
b. Donor impurities
c. Either (a) or (b)
d. None of these
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4) In N - type semiconductor, the impurities added to a semiconductor are
- Published on 02 Sep 15
a. Trivalent
b. Pentavalent
c. Monovalent
d. Tetravalent
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5) Impurities are generally added in the pure semiconductor to
- Published on 02 Sep 15
a. increase the number of electrons
b. increase the number of holes
c. increase their conductivity
d. all of these
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6) If induction motor is direct switched-on then it will develop
- Published on 02 Sep 15
a. 1.5 times their full load torque
b. 1.5 to 2.5 times their full load torque
c. 2.5 times their full load torque
d. 1.5 to 5 times their full load torque
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7) In DOL fuses are provided to protect against
- Published on 02 Sep 15
a. Short circuit protection
b. Over voltage
c. Over current
d. Over load
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8) In four - point starter, the no volt release is connected across the
- Published on 02 Sep 15
a. Supply line through a protective resistance
b. In series with field circuit through a protective resistance
c. Either (a) or (b)
d. None of these
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9) The overload release protects the motor against
- Published on 02 Sep 15
a. Over voltage
b. Over current
c. Over load
d. All of these
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10) 3 - point starter is used to start the
- Published on 02 Sep 15
a. Series motor
b. Shunt motor
c. Compound motor
d. Only (b) and (c)
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