test final year

7/24/2019 Test Final Year

http://slidepdf.com/reader/full/test-final-year 1/8

Objective questions :

Prepared by K.Vinothkumar

1.

If doubling the voltage across a resistor doubles the current through the resistor then

A. the resistor value decreased

B. the resistor value did not change

C. the resistor value increased

D. it is impossible to determine the change in the resistor value

2. If the voltage across a fixed value of resistance is increased five times, what does the current do?

A. It increases by a factor of five.

B. It decreases by a factor of five.

C. It stays the same.

D. Not enough information

3.

If the resistance in a circuit with constant voltage increases, the current will

A. increase

B. decrease

C. stay the same

D. Not enough information

. !hat is the resistor value in the given circuit?

A. 2""



B. 1 #

C. 2 #

D. #

.

5.

!hat is the color code for a 22" $% resistor?

A. &ed, &ed, 'rown, (old

B. )range, )range, 'lac#, (old

C. &ed, &ed, 'lac#, (old

D. &ed, &ed, 'rown, *ilver

6.

+n atoms atomic number is determined by the number of-

A. neutrons minus protons

B. protons

C. electrons



D. neutrons

7.

he battery symbol is-

A.

B.

C.

D.

8. !hat is the current flow through &1, &2, and &3?

A. 1+, 1+, 1+

B. 1+, 2+, 3+

C. 3+, 3+, 3+

D. 3+, 2+, 1+



9. !hen transistors are used in digital circuits they usually operate in the-

A. active region

B. brea#down region

C. saturation and cutoff regions

D. linear region

10. In a /0 configuration, an emitter resistor is used for-

A. stabiliation

B. ac signal bypass

C. collector bias

D. higher gain

11. !hich device has one input and many outputs?

A. ultiplexer

B. 4emultiplexer

C. /ounter

D. 5lip flop

12. Executininthe!ommand"indo#the$o%%o#incode

a &'1()*+ , 'a'1-2**+ return

a. errormeae

b. 1

c. 2



d. 1

13. "hicho$the$o%%o#intatementicorrect/

a. unction#horeturnthenameo$thecurrent%y%oeduer

b. unction#horeturnthenameo$theytemadminitrator

c. unction#hodip%aytheuer34$ora%%accounton thecomputer

d. oneo$theaboe

1. Most popular oscillator configuration for audio applications is

(a) Hartley oscillator (b) colpitt’s oscillator

(c) wein-bridge oscillator (d) R-C phase shift oscillator.

15. + geosynchronous satellite

A. has the same period a that of the arth

B. has a circular orbit

C. rotates in the e6uatorial plane

D. has all of the above

16. !hat is the power in the given circuit?

A. 32 !

B. 7" !

C. $"" !



D. 18 #!

17. nergy is defined as the ability to

A. produce heat

B. produce light

C. produce sound

D. +ll of the above

17. If current through a resistance is halved

A. the resistance is halved

B. the voltage is halved

C. the voltage doubles

D. none of the above

19. he : point on a load line may be used to determine-

A. ;/ B. ;//

C. ;' D. I/

2". + transistor may be used as a switching device or as a-

A. fixed resistor

B. tuning device

C.rectifier

D. variable resistor

21. !ith low0power transistor pac#ages, the base terminal is usually the-

A. tab end



B. middle

C. right end

D. stud mount

22. ost of the electrons in the base of an N<N transistor flow-

A. out of the base lead

B. into the collector

C. into the emitter

D. into the base supply

23. In a transistor, collector current is controlled by-

A. collector voltage

B. base current

C. collector resistance

D. all of the above

2. otal emitter current is-

A. I = I/

B. I/ > I

C. I' > I/

D. I' = I/

2$. + )*5 has how many terminals?

A. 2 or 3

B. 3

C.



D. 3 or

test final year

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