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23rd November 2017, 01:53 PM
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Join Date: Aug 2012
Re: Hindustan Petroleum Model Question Paper

As you Asking for the Placement Paper of the HPCL Electrical & Electronics Engineering is given below

1. Choose which of the below mentioned stands true for its justification.
a. A transparent latch consists of a D flip flop
b. A flip flop is used to store 1 bit of information
c. Master slave flip flop is used to store 2 bits of information
d. Race around condition occurs in JK flip flop when both the inputs are 1

2. Choose the correct option to identify the fastest read/writable memory?
a. Flash
b. PROM
c. EEPROM
d. None of the above

3. Which logic is used by odd parity generator?
a. Analog
b. Sequential
c. Digital
d. None of the above

4. If you have to implement AB+CD+EF, how many NAND gates will be required to do so?
a. 2
b. 1
c. 3
d. 4

5. State the value of A+1.
a. 1
b. A
c. A
d. None of the above

6. According to Boolean Algebra what is the value of 1+A+B+C
a. A+B+C
b. 1
c. A
d. None of the above

7. How many number of 1s are there in the binary expression 162*9+162*7+16*5+3?
a. 23
b. 4
c. 6
d. 10

8. Choose the correct alternative that is used as a data selector.
a. Decoder
b. Modulator
c. Encoder
d. Demodulator

9. Which transistor will you use in enhancement mode?
a. UJT
b. MOSFET
c. JFET
d. NPN

10. Which of the following option consist of high cut off frequency?
a. CE
b. CB
c. CC
d. None of the above

11. What is the largest negative number be represented with 8 bits in 2s compliment representation?
a. -127
b. -256
c. -255
d. -128

12. State the range of generation voltage.
a. Between 400 KV and 700 KV
b. Between 11 KV and 33 KV
c. Between 132 KV and 400 KV
d. None of the above

13. Choose which of the following option falls true for hysteresis motor.
a. Needs Dc excitation
b. Is not a self starting motor
c. Is a constant speed motor
d. Cannot be run in reverse speed

14. Which heating method is independent of supply frequency?
a. Dielectric heating
b. Electric arc heating
c. Induction heating
d. Electric resistance heating

15. What is the power factor of a squirrel cage induction motor?
a. Low at heavy load only
b. Low at light load only
c. Low at light and heavy load only
d. Low at rated load only

16 .Choose the correct option which uses direct inward dialling as one of its feature.
a. VPN
b. PBX
c. PSTN
d. EPABX

17. Choose the correct option for identifying the two windings of a transformer?
a. Not linked at all
b. Conductively linked
c. Electrically linked
d. Inductively linked

Fill in the blanks

18. In a stepper motor the angular displacement
a. It cannot be used for positioning of work tables and tools in NC machine
b. Can be precisely controlled
c. It cannot be readily interfaced with micro - computer based controller
d. The angular displacement cannot be precisely controlled

19. The purpose of inducing emf in the primary of a transformer
a. Leads the flux by 90 degree
b. Lags behind the flux by 90 degree
c. Is in phase with the flux
d. Is in phase opposition to that of flux

20. Which motor will you choose which can operate in both lagging as well as leading power factors?
a. Synchronous motor
b. Squirrel cage motor
c. DC shunt motor
d. Wound rotor induction motor


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