KSEB Meter Reader Previous Questions

Hello sir after graduation I’m looking for to attempt an KSEB entrance exam i want some previous year question paper of KSEB exam for Meter reader? Can any one here provide me KSEB Meter Reader Previous Questions?

[Shaleen]

The Kerala Public Service Commission is a body created by the Constitution of India. This is a government commission that organised a entrance for its employee.

Here I was founded some questions of KSEB these are:

Question paper of KSEB Sub Engineer held at 2012

1. Thickness of insulation layer on the conductor in cables depends on :
(A) current to be carried (B) operating voltage
(C) power factor (D) both (A) and (B)

2. Radio interference from a fluorescent tube can be reduced by:
(A) connecting a small capacitor across starter terminals
(B) eliminating choke
(C) putting two tubes in parallel
(D) any of the above

3. A series resonant circuit has :
(A) zero power factor and maximum current
(B) unity power factor and maximum current
(C) unity power factor and minimum current
(D) zero power factor and minimum current

4. Rated breaking capacity of a circuit breaker is :
(A) product of breaking current and fault voltage
(B) product of rated symmetrical breaking current and related voltage
(C) product of rated breaking current and rated voltage
(D) product of rated symmetrical breaking current and fault voltage

5. Pulse width of a 555 monostable multi vibrator is :
(A) 0.69 RC (B) 1.1 RC (C) RC (D) none of these

6. A DOL starter is employed for starting motors is due to :
(A) 3.75 kW (B) 7.5 kW (C) 15 kW (D) 25 kW

7. The sparking at the brushes in a dc machine is due to :
(A) armature reaction (B) reactants voltage
(C) high resistance of carbon brushes (D) presence of commutators

8. When the secondary winding of a potential transformer is suddenly open circuited with primary winding excited :
(A) primary winding draws only the no load current
(B) large voltage is produced and rupture the insulation
(C) large voltage is produced and causes safety hazard to operating personal
(D) none of the above

9. A 1 mA ammeter has a resistance of 100…. The shunt resistance to convert it to a 1 A ammeter is :
(A) 100 (B) 0.1001 (C) 0.001 (D) 10000

10. An alternator is synchronized to a bus bar whose frequency is 50 Hz. The bulb of the synchronoscope flickers at a frequency of 5 Hz. The frequency of the alternator is :
(A) 55 Hz (B) 45 Hz (C) 55 Hz or 45 Hz (D) none of the above

11. A differential amplifier has a common mode gain of 0.02. It has +200 mV signals applied to each of its inputs. The amplitude of output signal is :
(A) 4 mV (B) 0 V (C) 8 mV (D) 1 mV

12. Which motor is preferred when quick speed reversal is the main cosideration :
(A) synchronous motor (B) squirrel cage induction motor
(C) slip ring induction motor (D) dc motor

13. Large industrial consumers are supplied power at :
(A) 132 kV (B) 400 kV (C) 11 kV (D) 66 kV

14. Mixture used for filling around the earth electrode for having effective earthing is :
(A) coal-salt mixture (B) coal-lime mixture
(C) coal-sawdust mixture (D) coal-sand mixture

15. In a variable speed induction motor drive V/f is kept constant. The motor operates in the:
(A) constant torque mode (B) constant power mode
(C) constant slip mode (D) variable power mode

16. Ramp response of a circuit is obtained from the step response by :
(A) differentiating the step response

(B) integrating the step response
(C) differentiating the step response twice
(D) integrating the step response twice

17. Power factor of a pure inductor is :
(A) 0 (B) 1 (C) ½ (D) 2/3

18. A capacitor energized by a symmetrical square wave current source. Steady state voltage across the capacitor is :
(A) square wave (B) step wave
(C) impulse wave (D) triangular wave

19. Cells are connected in parallel in order to increase the :
(A) efficiency (B) current capacity
(C) voltage rating (D) life of the cell

20. Dielectric strength of a material depends on :
(A) thickness (B) moisture content
(C) temperature (D) all of these

21. Frequency spectrum of white noise :
(A) has flat spectral density
(B) extends over infinite range
(C) has limited number of frequency component
(D) has spectral density varying as 1/f

22. Universal logic gates are :
(A) AND and NAND (B) NAND and NOR
(C) OR and NOR (D) AND and OR

23. Over charging of a lead acid battery would cause :
(A) loss of active material
(B) excessive gassing
(C) increase in temperature resulting in buckling of plates
(D) all the above

24. 1 kWh = …………… joules :
(A) 3600 (B) 36,00,000 (C) 1,00,000 (D) none of the above

25. For removing static charge from machinery the :
(A) insulated cabins are constructed
(B) frame work is earthed
(C) machinery is insulated
(D) any of the above

26. Hysteresis is an instrument means :
(A) inaccuracy due to change in temperature
(B) reliability of the instrument
(C) repeatability of the instrument
(D) change in same reading when input is first increased and then decreased

27. Capacitors with automatic power factor controller when installed in a plant :
(A) reduces active power drawn from grid
(B) reduces the reactive power drawn from grid
(C) reduces the voltage of the plant
(D) increases the load current of the plant

28. Maximum demand controller is used to :
(A) switch off essential loads in a logical sequence
(B) exceed the demand of the plant
(C) switch off non-essential loads in alogical sequence
(D) controls the power factor of the plant

29. ‘Creep’ in energy meter can be prevented by :
(A) using steel laminations of high permeability
(B) using strongerr break magnet
(C) having two holes on opposite sides of the disc
(D) using extra turns in the voltage coil

30. The transformer noise is mainly because of :
(A) cooling oil (B) sinusoidal current
(C) magnetic flux (D) all of the above

31. Which property of copper enables it to be drawn into thin wires and sheets?
(A) ductility (B) elasticity (C) toughness (D) tenacity

32. The shaft of electric motors is generrally supported in :
(A) magnetic bearings (B) bush bearings
(C) ball or roller bearings (D) cast iron bearings

33. In a 3-phase controlled bridge rectifier, withan increase of overlap angle, the output dc voltage :
(A) decreases (B) increases
(C) does not change (D) depends upon load inductance

34. When a synchronous motor is running at synchronous speed, the damper winding produces :
(A) damping torque (B) eddy current torque
(C) torque aiding the developed torque (D) no torque

35. In an electronic multi meter, MOSFET or FET is preferred over BJT because :
(A) its input resistance is high
(B) its input resistance is low
(C) its resistance is high and does not change with range switch
(D) it is cheaper

36. Motor which can be operated at lagging as well as leading power factor is :
(A) squirrel cage induction motor (B) wound rotor induction motor
(C) dc shunt motor (D) synchronous motor

37. Out of the following methods of heating, which one is independent of supply frequency :
(A) electric arc heating (B) induction heating
(C) dielectric heating (D) electric resistance heating

38. As the voltage of transmission increases the volume of conductor :
(A) decreases (B) increases
(C) increases proportionately (D) does not change

39. Boundary of the protective zone is determined by :
(A) sensitivity of relay used (B) location of CT
(C) location of PT (D) none of these

40. Inverse definite minimum time lag is called :
(A) over current relay (B) differential relay
(C) directional overr current relay (D) pilot relay

41. Slip of an induction machine is 0.02 when the frequency of supply is 50 Hz. Frequency of rotor induced emf is :
(A) 10 Hz (B) 2500 Hz (C) 1 Hz (D) 50 Hz

42. Harmful effects of harmonics on the ac side of high voltage dc transmission is reduced by :
(A) static compensators (B) synchronous condensers
(C) shunt filters (D) shunt capacitors

43. In rotating electrical machines the insulation temperature limit for class B type is :
(A) 105 (B) 130 (C) 150 (D) 180

44. The bandwidth of a RF tuned amplifier is dependent on :
(A) Q-factor of the tuned output circuit
(B) Q-factor of the tuned input circuit
(C) Quiescent operating point
(D) Q-factor of the output and input circuits as well as quiescent operating point

45. A relay used for protection of motors against overload is :
(A) impedance relay (B) electromagnetic attraction type
(C) thermal relay (D) Buchholz’s relay

46. Fuse protection is used for current ratings up to :
(A) 10 A (B) 20 A (C) 50 A (D) 100 A

47. Method of speed control used on 25 kV, 50 Hz single phase traction is :
(A) tap changing control of transformer
(B) reduced current method
(C) series parallel operation of motors
(D) any of the above

48. Breaking capacity of a circuit breaker is usually expressed in terms of :
(A) Amperes (B) Volts (C) MW (D) MVA

49. A bimetal strip consists of two metal having different :
(A) thermal diffusivity (B) thermal conductivity
(C) specific heat (D) coefficient of expansion

50. In star connected system witout neutral grounding, zero sequence currents are :
(A) same as peak value of phase current
(B) same as rms value of phase currents
(C) vector sum of phase currents
(D) zero