SSC IMD Electronics Quiz 2017

Dear Readers,

In this exam, 100 questions will be asked from General Engineering (GE) section. We are providing quizzes on alternate basis- Electronics & Telecommunication Engineering / Physics / Computer Science and Information Technology (CS IT). It will help you to score good in GE section.The Examination will be held from 25th to 30th November 2017 in a computer based pattern.

Q1. At room temperature the current in an intrinsic semiconductor is due to

(a) holes
(b) electrons
(c) ions
(d) holes and electrons

Q2. Assertion (A): In p-n-p transistor collector current is termed negative.
Reason (R): In p-n-p transistor holes are majority carriers. 
(a) Both A and R are true and R is correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

Q3. The most commonly used semiconductor material is
(a) silicon
(b) germanium
(c) mixture of silicon and germanium
(d) none of the above

Q4. In which of these is reverse recovery time nearly zero?
(a) Zener diode
(b) Tunnel diode
(c) Schottky diode
(d) PIN diode

Q5. A transistor has a current gain of 0.99 in the CB mode. Its current gain in the CC mode is
(a) 100
(b) 99
(c) 1.01
(d) 0.99

Q6. The amount of photoelectric emission current depends on
(a) frequency of incident radiation
(b) intensity of incident radiation
(c) both frequency and intensity of incident radiation
(d) none of the above

Q7. Assertion (A): A p-n junction has high resistance in reverse direction.

Reason (R): When a reverse bias is applied to p-n junction, the width of depletion layer increases.

(a) Both A and R are true and R is correct explanation of A
(b) Both A and R are true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true

Q8. Voltage series feedback (Also called series-shunt feedback) results in
(a) increase in both I/P and O/P impedances
(b) decrease in both I/P and O/P impedances
(c) increase in I/P impedance and decrease in O/P impedance
(d) decrease in I/P impedance and increase in O/P impedance

Q9. How many free electrons does a p type semiconductor has?
(a) only those produced by thermal energy
(b) only those produced by doping
(c) those produced by doping as well as thermal energy
(d) any of the above

Q10. Which of the following has highest resistivity?
(a) Mica
(b) Paraffin wax
(c) Air
(d) Mineral oil


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