Join Our Email Alerts-Subscribe
Important Note:Login & Check Your Email Inbox and Activate Confirmation Link

Enter Your Email :

Copyright Disclaimer:
Section 107 of the Copyright Act Fair Use Contents .
We are forwarding content link(s) from our website to content website & We are not serving any contents.
Main the Content PDF link(s) is/are obtained from GoogleSearch
for the purpose of Education & Teaching Intention. Not for commercial purpose. is not liable/responsible for any copyright issues.

Placement Materials & Answers-Free Download

BEL Placement Papers-Free Download

1. The gray code equivalent of binary 1100 is

a. 1011

b. 1101

c. 1010-Answer

d. 1100

2. A Multiplexer has

a. Multiple inputs and single output--Answer

b. Single input and Multiple outputs

c. Multiple inputs and Multiple outputs

d. Multiple inputs for Storage of Data

3. A binary half adder

a. Adds two binary digits and produces their sum and carry-Answer

b. Adds half the sum to the carry

c. Adds two binary digits and carry from previous addition

d. Adds two binary digits at half the speed

4. An index register in a computer is for

a. Arithmetic and logic functions

b. Storage of results

c. Modifying the address-Answer

d. Counting the no of programmes

5. An example of volatile memory is

a. RAM-Answer

b. ROM


d. Magnetic tape

6. Barrier voltage in a P-N junction is caused by

a. Thermally generated electrons and holes

b. Diffusion of majority carriers across the junction-Answer

c. Migration of minority carriers across the junction

d. Flow of drift current

7. The temperature coefficient of an intrinsic semiconductor is

a. Positive

b. Negative-Answer

c. Zero

d. Like metals

8. A silicon transistor has a leakage current 1cbo = 1 ma. If the temp. rises by 50o C the leakage current will be

a. 30 ma

b. 32ma-Answer

c. 50ma

d. no change

9. The noise figure of an ideal amplifier in decibel is

a. 0.5

b. 0-Answer

c. 1

d. 10

10. The rise time of an amplifier is 200 nsec. Its bandwidth is

a. 70MHz

b. 140MHz

c. 100MHz

d. 1.75Mhz-Answer

11. MOSFET operates in

a. Depletion mode only

b. Enhancement mode only

c. Depletion and enhancement mode--Answer

d. None of these of the above

12. A device which behaves like SCRs is

a. UJT

b. Triac-Answer


d. SRD

13. A plate modulated class C RF amplifier produces 100 KW of radiated power at 100 % modulation. The modulating audio amplifier supplies approximately

a. 25KW

b. 33KW-Answer

c. 50KW

d. 66KW

14. A 100 MHz FM carrier, modulated by a 5 KHz sine wave deviates by 50 KHz If the frequency of the modulating sine wave is doubled, the deviation will

a. Double

b. Half

c. Quadruple

d. Have no change--Answer

15. Noise generated by a resistor is dependent on

a. Its Value

b. Its temperature

c. Both value and temp-Answer

d. None of these

16. A 32 channel 8 bit PCM system samples at 8 KHz rate. The overall bit rate in kilobits per second will be

a. 2048--Answer

b. 2000

c. 1920

d. 64

17. Stub matching eliminates standing wave on

a. Load side of the stub

b. Source side of the stub

c. Both sides-Answer

d. On the stub

18. A half wave folded dipole has a radiation resistance of

a. 72 W


c. 144W

d. 288W-Answer

19. Top loading is used in antennas for

a. Decrease in impedance

b. Increase in bandwidth

c. Increase in effective height-Answer

d. Decease the height

20. The term critical frequency in Ionospheric propagation is

a. Lowest frequency reflected by Ionosphere

b. Highest frequency reflected by the Ionosphere at vertical incidence--Answer

c. Lowest frequency reflected by the Ionosphere at vertical incidence

d. Lowest communication frequency possible

Source: Contents are provided by Technicalsymposium Google Group Members.
Disclaimer: All the above contents are provided by Google Group members.
Further, this content is not intended to be used for commercial purpose. is not liable/responsible for any copyright issues.

Download-Placement Paprs & Answers PDF

Free Placement Study Notes PDF-Download Fresher Jobs & All Study Notes-Free Download
 Live Support-Chat with Our Experts

Official Contact: +91-9245556793 (Whatsapp Message / SMS / Voice Call)

Our Expert team is ready to answer all your questions immediately-Feel free to speak in Tamil/English.

(Example:Events info/Lecture Notes/Off-Campus & All Jobs/Projects & All education information)

Working hrs (IST): (Morning: 10:00AM-3:00 PM) and (Evening:5:00 PM to 10:00 PM)

All Latest Question & Answer Page (FAQ)-Click here