# 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
 Answer  Explanation  Related Ques ANSWER: Pulsating dc signal into a pure dc signal Explanation: No explanation is available for this question!

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
 Answer  Explanation  Related Ques ANSWER: 0.7 V, 0.3 V Explanation: No explanation is available for this question!

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
 Answer  Explanation  Related Ques ANSWER: Acceptor impurities Explanation: No explanation is available for this question!

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
 Answer  Explanation  Related Ques ANSWER: Pentavalent Explanation: No explanation is available for this question!

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
 Answer  Explanation  Related Ques ANSWER: increase their conductivity Explanation: No explanation is available for this question!

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
 Answer  Explanation  Related Ques ANSWER: 1.5 to 2.5 times their full load torque Explanation: No explanation is available for this question!

7)   In DOL fuses are provided to protect against
- Published on 02 Sep 15

a. Short circuit protection
b. Over voltage
c. Over current
 Answer  Explanation  Related Ques ANSWER: Short circuit protection Explanation: No explanation is available for this question!

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
 Answer  Explanation  Related Ques ANSWER: Supply line through a protective resistance Explanation: No explanation is available for this question!

9)   The overload release protects the motor against
- Published on 02 Sep 15

a. Over voltage
b. Over current