#1
June 30th, 2016, 09:40 AM
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HPCL Test
Hello sir I want to prepare for HPCL test and for that I want some questions for practice so here can you please give me some questions ?
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#2
June 30th, 2016, 10:08 AM
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Re: HPCL Test
Hey as per your demand here I am providing you questions for your preparation for HPCL test Here I am giving you some questions for practice 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 1’s 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 2’s 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 |