KPSC-Instructor Grade I-079/2017 Answer key
Question Paper with answer key of the written exam (INSTRUCTOR GRADE I KERALA TECHNICAL EDUCATION) conducted on 02/12/2020 . Question paper code was ‘079/2017’.
#1. The all day efficiency of transformer depends on......?
#2. A 3 phase induction motor is running at a slip of 4% and input to the rotor is 2000watts. the mechanical power developed in the rotor is....?
#3. If the stator frequency and voltage of an induction motor are reduced proportionally, then.....?
#4. In a squirrel cage induction motor, the starting torque with auto transformer starting is.....times the torque with direct switching, K being the transformation ratio of the auto transformer.
#5. The power factor of an alternator under short conditions is.....?
#6. What is the address(SFR) for TCON, SCON, SBUF, PCON, and PSW respectively?
#7. A thyrite type lightning arrestor....?
#8. Which of the following types of heating will be preferred for cooking food without removing the outer shells?
#9. Damping used in moving iron instrument is.....?
#10. An RLC series circuit remains predominatly inductive.....?
#11. In a single phase full wave rectifier, during blocking state the peak inverse voltage of diode is Vm is the peak voltage?
#12. A forward voltage can be applied to SCR after its.....?
#13. Synchronous motor is normally used for driving.....
#14. In moving iron instrument, the deflecting torque is proportional to......
#15. An ohmmeter is a ......
#16. In a single phase power factor meter, the phase difference between the currents in the two pressure coils is....
#17. In PLC Ladder logic programming consists of....
#18. Transmissiom lines are transposed to.....?
#19. The use of zener diode connected in a UJT circuit used for triggering an SCR is to....?
#20. The input impedence of a CRO is.....?
#21. A mirror is placed behind the pointer in measuring instruments for......?
#22. For proper earthing, the earth wire should not be of size smaller than.....?
#23. The most economical DC distribution system is.....?
#24. The coil span of dc armature winding is made equal to pole switch in order to....
#25. Which of the following type of generators does not require equalizers for satisfactorily for parallel operation?
#26. In a dc motor, unidirectional torque is produced with the help of.....
#27. The torque Vs armature current graph for a dc series motor is....
#28. A 200 KVA transformer has iron lossof 1KW and full load copper loss of 2 KW.the KVA corresponding to maximum efficiency is......
#29. In a synchronous machine, the angle between the synchronously rotating stator flux and rotor poles is called.....?
#30. A 100V/20V , 100 VA transformer is converted to 100V/110V auto transformer the rating of the auto transformer is....
#31. If the mechanical load of a three phase induction motor is increased from no load to full load, the input power factor of the motor will ....
#32. In which of the region, induction motor operation is stable?
#33. Grading of cables is done to achieve.....
#34. Steady state stability of a power system is enhanced by......
#35. A hydel power plant of run off river type should be provided with a pondage so that.....
#36. Which one is not a unconventional source of energy?
#37. The pin which provides reset option in 8051 micro controller is.....
#38. In sodium vapour lamp, neon gas....
#39. Corona loss increases with.....
#40. If the excitation of a synchronous generator fails, it acts as a......
#41. The device that does not have the gate terminal is....
#42. A string insulator has 5 units. The voltage across the bottom most unit is 25% of the total voltage. string efficiency is.....?
#43. Resistance switching is normally employed in the case of.....?
#44. Electric power for steam locomotive is provided through.....?
#45. The vertical core type induction furnace requires supply at.....?
#46. Pin type insulators are mainly used in.....?
#47. The 8051 uses which RAM locations for register R0-R7 on powering up....?
#48. An isolated device used to protect a PLC from incoming surge from fields.....?
#49. Fusing factor is defined as the ratio between....?
#50. The illumination is directly proportional to the cosine of the angle made by the normal to the illuminated surface with the direction of the incident flux, statement is associated with.....?
#51. If the current in a zero resistance wire AB is increased, the voltage Vab across the wire will.....
#52. Cutting an air gap in a magnetic circuit result in....?
#53. In a parallel RC circuit....
#54. A 1000W, 230 V electric kettle is connected in series with another similar kettle and the combination is connected to 230V supply. The total power drawn by the combination will be.....?
#55. The unit of the permittivity is.....?
#56. Load impedence must match amplifier output impedence in order that......?
#57. Astable multi vibrator may be used as.....?
#58. Which of the following logic gate dissipates minimum power?
#59. The 2's complement of binary number 0.01011 is......
#60. Universal gates are...?
#61. In a full wave rectifier, the peak inverse voltage per diode is....?
#62. What is CDMA?
#63. Octal equivalent of decimal 51 is....?
#64. In a T flip flop, ratio of frequency of the input pulse to the frequency of out put pulse is....?
#65. The transistor amplifier stage has lowest input impedance in....?
#66. The function of a filter in a rectifier is to....?
#67. Register that is used to hold the memory address of the next instruction to be executed....?
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