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7/31/2019 Eee Question HIT

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ELECTRICAL & ELECTRONICS ENGG

1.Ohms law applicable for(a) linear circuits only(b) non linear circuits only(c) both linear and non linear circuits

(d) none of these

2.What is the equivalent resistance when 10 Ohms and 20 Ohms resistors areconnectedin series(a) 35 Ohms(b) 25 Ohms(c) 30Ohms(d) none of these

3. Form factor is defined as the ratio of

(a) Average value to Maximum value(b) Maximum value to Average value(c) Peak value to R.M.S Value(d) R.M.S Value to Average value

4. R.M.S Value of full wave rectified sinusoidal voltage is

(a) VM/3

(b) VM/2

(c) VM/2

(d) none of these

5. Power factor for resistive load is(a) Zero(b) Unity(c) Infinity(d) 0.2

6 voltage is a quantity(a) Scalar(b) Vector

(c) Scalar and Vector(d) none of these

7. In D.C , Capacitor acts as(a) Short circuit(b) Open circuit(c) either (a)or (b)(d) none of these

ECE VV 001


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8. In 3 phase star circuit, phase voltage is

(a) VPh =3 VL(b) VPh = VL /3

(c) VPh = VL

(d) VPh =3 VL

9. In 3 phase delta circuit, line current is

(a) IL =I Ph(b) IL =2 I Ph(c) IL =3 I Ph(d) IL =3 I Ph

10. Voltage-Current relationship in resistor element is(a) In phase(b) Out of phase(c) No Relation(d) constant

11. For high voltage applications which type of 3 phase circuit to be Preferred(a) Star(b) Delta(c) Star or Delta(d) Neither Star nor Delta

12. What is the unit of Reactive Power(a) KVA(b) KW(c) HP(d) KVAR

13. Current is defined as(a) Charge/time(b) Time/charge(c) power/time

(d) None of these

14. Active elements are(a) Voltage sources only(b) Current sources only(c) Resistors only(d) Both Voltage and Current sources


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15. D.C has(a) Constant magnitude(b) Variable magnitude(c) Fixed Polarities(d) Constant magnitude and Fixed Polarities

16. In Capacitive circuit, Current flows in the capacitor(a) i=C (dv/dt)(b) i=V(dc/dt)(c) i=C(di/dt)(d) i=Ct

17. Peak factor is defined as the ratio of(a) Average value to Maximum value(b) Maximum value to Average value(c) Peak value to R.M.S Value

(d) R.M.S Value to Average value

18. Unit of apparent power is(a) Ampere(b) Volt(c) Watt(d) Volt-ampere

19. A.C has(a) Constant magnitude

(b) Variable magnitude(c) Fixed Polarities(d) Constant magnitude and Fixed Polarities

20. In D.C , inductor acts as(a) Short circuit(b) Open circuit(c) both (a)&(b)(d) none of these

21. Workdone is(a) F.d(b) E/F(c) IR(d) None of these

22. For high current applications which type of 3 phase circuit is Preferred(a) Star(b) Delta


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(c) Star or Delta(d) Neither Star nor Delta

23. Voltage-Current relationship in inductor element is(a) In phase(b) 90 (lead)

(c) 90 (lag)(d) constant

24. Voltage-Current relationship in capacitor element is(a) In phase(b) 90 (lead)(c) 90 (lag)(d) constant

25. R.M.S Value of full wave rectified sinusoidal voltage is

(a) VM/3(b) VM/2

(c) VM/2

(d) none of these

26. Form factor of full wave rectified sinusoidal voltage is(a) 1.21(b) 1.11(c) 4.44(d) none of these

27. Power factor for pure inductor(a) 0(lead) (b) 0 (c) 0(lag) (d) None of this

28. Power factor for pure capacitor(a) 0(lead) ,(b) 0 (c) 0(Lag) (d) Non of this

29. In 3 phase delta circuit, phase voltage is

(a) VPh =3 VL(b) V

Ph= V

L/3

(c) VPh = VL(d) VPh =3 VL

30. Form factor of full wave rectified sine waveform isa) 1.11 (b) 2 Vm ( c) 1.57 (d) none of this

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