electrical engineering MCQs – Page 275

Practise multiple-choice questions from electrical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

electrical engineering Mcqs

1. economics of power generation 2. analog electronics 3. solid state switching circuits 4. parallel circuits 5. switchgear and protection 6. op amp circuits 7. transistor audio power amplifiers 8. electrostatics 9. heating and welding 10. multi stage transistor amplifiers 11. passive filters 12. network theorems 13. regulated d c power supply 14. a c fundamentals circuits and circuit theory 15. electromagnetic induction 16. power electronics 17. magnetism and electromagnetism 18. transformers 19. modulation and demodulation 20. d c generators 21. semiconductor theory 22. single phase induction motors 23. semiconductor diode 24. hybrid parameters 25. digital electronics 26. oscillators 27. earthing or grounding 28. single stage transistor amplifiers 29. d c motors 30. transistor biasing 31. amplifiers with negative feedback 32. basic electrical 33. electronic instruments 34. synchronous motors 35. field effect transistors fet 36. magnetic circuit 37. control systems 38. industrial drives 39. power generation 40. series parallel circuits 41. transistor tuned amplifiers 42. electrical engineering materials 43. rectifiers and converters 44. integrated circuits 45. scr silicon controlled rectifiers 46. cables 47. polyphase induction motors 48. measurement and instrumentation 49. transistors 50. electrical machine design 51. electrolysis and storage of batteries 52. electric traction 53. transmission and distribution

5481. The inverter is _________________?
0

A. one of the above

B. AND gate

C. NOT gate

D. OR gate

5482. A NAND gate is called a universal logic element because______________?
0

A. many digital computers use NAND gates

B. it is used by everybody

C. any logic function can be realized by NAND gates alone

D. all the minization techniques are applicable for optimum NAND gate realization

5483. The number 1000 would appear just immediately after__________________?
0

A. FFFF (hex)

B. 1111 (binary)

C. 7777 (octal)

D. All of the above

5484. In Boolean algebra, the bar sign (-) indicates__________________?
0

A. NOT operation

B. AND operation

C. None of the above

D. OR operation

5485. The NOR gate is OR gate followed by____________________?
0

A. None of the above

B. AND gate

C. NOT gate

D. NAND gate

5486. The NAND gate is AND gate followed by_________________?
0

A. None of the above

B. AND gate

C. OR gate

D. NOT gate

5487. Digital circuit can be made by the repeated use of________________?
0

A. NOT gates

B. OR gates

C. None of the above

D. NAND gates

5488. The number of Boolean functions that can be generated by n variables is equal to_________________?
0

A. 2n

B. 22 n

C. 2n-1

D. 2n

5489. The fan put of a 7400 NAND gate is_______________?
0

A. 10TTL

B. 8TTL

C. 5TTL

D. 2TTL

5490. The binary number 10101 is equivalent to decimal number_________________?
0

A. 21

B. 27

C. 12

D. 19

5491. Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits ?
0

A. State Evaluation

B. State Reduction

C. State Minimization

D. State Assignment

5492. An OR gate has 6 inputs. The number of input words in its truth table are________________?
0

A. 64

B. 6

C. 128

D. 32

5493. Digital computers are more widely used as compared to analog computers, because they are______________?
0

A. useful over wider ranges of problem types

B. easier to maintain

C. always more accurate and faster

D. less expensive

5494. The binary code of (21.125)10 is_______________?
0

A. 10101.01

B. 10100.111

C. 10100.001

D. 10101.001

5495. In case of OR gate, no matter what the number of inputs, a____________________?
0

A. 1 at any input causes the output to be at logic 1

B. 1 at any input causes the output to be at logic 0

C. 0 any input causes the output to be at logic 0

D. 0 at any input causes the output to be at logic 1

5496. Excess-3 code is known as_________________?
0

A. Algebraic code

B. Weighted code

C. Cyclic redundancy code

D. Self-complementing code

5497. Consider the representation of six-bit numbers by twos complement, ones complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000 ?
0

A. All three representations

B. Twos complement and ones complement only

C. Sign and magnitude and ones complement only

D. Twos complement only

5498. Indicate which of the following three binary additions are correct? 1.1011 + 1010 = 10101 II. 1010 + 1101 = 10111 ?
0

A. I and II

B. II and III

C. . 1010 + 1101 = 11111

D. II and III

E. III only

5499. What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease ?
0

A. A & D

B. B & C

C. A & B

D. C & D

5500. Which is the correct order of sequence for representing the input values in K-map ?
0

A. (00, 01, 11, 10)

B. (00, 01, 10, 11)

C. (00, 10, 11, 01)

D. (00, 10, 01, 11)

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