Solved question paper for BEE May-2017 (DIPLOMA mechanical engineering 1st-2nd)

Basic electrical engineering

Previous year question paper with solutions for Basic electrical engineering May-2017

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Question paper 1

  1. SECTION A

    Q1. Fill in the blanks:

    a. Ohms law will hold good if the __________ remain constant.

    Answer:

  2. b. If 125V is applied across a 250V, 100w bulb, the power consumption will be ______.

    Answer:

  3. c. Kirchhoff’ s current law (KCL) is applicable to___________.

    Answer:

  4. d. An ideal current source has ___________ internal resistance.

    Answer:

  5. e. The unit of self inductance is____________.

    Answer:

  6. f. For battery charging ___________ supply is required.

    Answer:

  7. g. Peak factor is defined as the ratio of ________ and________.

    Answer:

  8. h. The power consumed in pure capacitive circuit is___________.

    Answer:

  9. i. To improve p.f. of a circuit, a capacitor is connected in_________ to the load.

    Answer:

  10. j. Sun is a ____________ source of energy.

    Answer:

  11. SECTION B

    Q2: Attempt any five questions.

    i. State and explain Kirchhoff’ s current law.

    Answer:

  12. ii. State and explain Thevenin, s theorem with help of neat diagram.

     

    Answer:

  13. iii. What is constant current source and draw characteristics of an ideal current source.

    Answer:

  14. iv. State and explain Faraday’ s laws of electromagnetic induction?

    Answer:

  15. v. Discuss about primary and secondary cells?

    Answer:

  16. vi. Compare A.C. and D.C.

    Answer:

  17. vii. What are the causes and disadvantages of poor power factor?

    Answer:

  18. viii. Mention six important advantages of electrical energy.

    Answer:

  19. SECTION-C

    Attempt any three questions.

    Q3. Mention the similarities and dissimilarities of electric and magnetic circuits.

    Answer:

  20. Q4. What are the various precautions to be observed for obtaining longer life and better efficiency of lead acid battery.

    Answer:

  21. Q5.Define instantaneous value, maximum value, average value and effective value of an alternating quantity.

    Answer:

  22. OR

    Find the impedance, current and power factor of the following series circuits and draw the corresponding phasor diagram: (i) R and L (ii) R and C In each case the applied voltage is 100 volts, the frequency is 50 Hz, R=40Ω, L=0.1H,C=20µf.

    Answer:

  23. Q.6.Explain the major components of a nuclear power station and draw there on block diagram.

    Answer: