GATE Electrical Engineering Test Paper Online

1. Two 1-ф transformers with equal turn have impedance of (0.5 + j 0.3)Ω and (0.6 + j 10) Ω with respect to the secondary if they operate in parallel, how will they share a load of 10 kW at 0.8 pf lagging.

2. If the circuit shown in fig R₁ is variable from zero to α. For maximum power to the delivered to R₁ the value of R₁ should be

3. A water boiler at home is switched on the a.c. mains supplying power at 230 V/50 Hz. The frequency of instantaneous power consumed by the boiler is

4. In the lattice network, find the value of R for the maximum power transfer to the load

5. A non-inverting op-Amp amplifier is shown in fig. The output voltage V₀ is

6. Scott connections are used for

7. The breakdown stress of atmospheric air is approximately

8. Impulse ratio of rod gap is

9. The voltage across R after t = 0 and t = 10 sec. will be

10. For the system shown in fig, with a damping ratio of 0.7 and an undamped natural frequency w_n of 4 rad/sec, the value of ‘k’ and ‘a’ are

11. The resonant frequency of the series circuit in given figure is

12. The following m/c is used as transmission line regulator

13. The operating voltage of a meggar is

14. The equivalent capacitance of the following circuit is

15. The Boolean expression for the output of the logic ckt shown in flg.

16. The voltmeter reading in the following circuit would be

17. Let the magnitude of the gain in inverting op-amp amplifier ckt shown in fig. be x with switch s₁ open. When switch s₁ is closed the magnitude of gain becomes.

18. The circuit shown in figure, is a

19. A series conductor device which is similar to two SCR’s is

20. A high Q coil has

21. If an alternator is operating at lagging power factor, its voltage regulation will always be

22. The current in resistor R shown in figure will be

23. Which of the following is not electromagnetic in nature?

1. Alpha rays
2. X-rays
3. Gamma rays
4. Cathode rays

24. An Amplifier has a gain of 10,000 expressed in decibels the gain is

25. The CMRR of the differential amp. Of given fig. is equal to:

26. If the fault current is 2000 A, the relay setting is 50% and ratio is 400.5. The plug setting multiplier will be

27. An induction meter can handle current up to

28. Thermal runway and pinch off phenomena are associated with

29. If the Laplace transform of the voltage across a capacitor of value of ½ F is

V_C(s) = s+1/s³+s²+s+1

The value of the current through the capacitor at t = 0⁺ is

30. Lissajous figures are used in a CRO while measuring

31. If ‘X’ is the system reactance and ‘R’ its resistance the power transmitted is maximum when

32. In the series RC ckt shown in fig., the voltage across C starts increasing the d. c. source is switched on. The rate of increase of voltage across C at the instant just after the switch is closed (i.e., at t = 0*), will be

33. Across the surface of a charged conductor, the electric?

34. The voltage generated in concentrated winding is … than distributed winding.

35. Which material is used in controlling chain reaction in a nuclear reactor:

36. Which type of motor is most suitable for computer printer drive.

37. The pitch of arc with 96 stator slots and 6 pole is

38. The number of Boolean function that can be generated by a variable us equal is equal to

39. The equivalent capacitance across a b will be

40. The circuit shown in figure, is a