CITS CBT EXAM 2022 question paper with answer | NSTI admission

 

Hi friends, In this post you will get all 75 objective questions of Electronic Mechanic asked in computer based test of CITS 2022. Also 25 objective questions of Maths and reasoning which is common for all trade/branch. These questions helps a lot to preparation of CITS exam in upcoming years. 

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Electronic Mechanic 2022

1. 78LXX series Integrated Circuit required no. of Inductor / L ...........

*78LXX family is monolithic fixed voltage regulator integrated circuit. They are suitable for applications that required supply current up to 100mA. 78LXX series Integrated Circuits do not require an inductor or L component.

2. Output waveform ...... measures.

 *The fact that the output voltage waveform is a cosine. 

3. Invertor Converts : 

• low d.c to high a.c 

4. Electric Energy stored in capacitor is : 

• Electrostatic Potential Energy 

5. Choose Unipolar Device - 

• FET [Field Effect Transistor] 

6. If Output is high of Ex-OR gate then Input is - 

• Different [0,1] 

7. Contractor is generally a ............. 

• device like a relay or solid-state switch

8. FET stands for ........... 

• Field Effect Transistor 

9. TTL ...... expansion? 

*Transistor Transistor Logic [ made by BJT] 

10. Software that detects and remove computer virus know as : 

•  Antivirus 

11. The basic unit for storing data in MS Excel -- 

• Cell 

12. Standard digits are used in Octal System : 

• (0,1,2,3,4,5,6,7) 

13. DIAC is a ........... : 

• Bidirectional Device 

14. Colour-band [resistor] Yellow-Violet-Orange-Gold then Resistor value is ........ : 

• 47*10^3 +/- 5% 

*[B,Br,R,O,Y,G,BV,Grey,W] 

15. Which range is suitable for measuring 125 ohms, 

1. R*100, 
2. R*1000, 
3. R*10 options. 

R*1000: This range can measure up to 1000 ohms (1000 times the base unit).

16. What types of Flip-Flop used to make resistor : 

• Flip-flops are not used to make resistors.

17. Unit of Inductance : 

• Henry [H] 

18. Which is not an insulator : 

• Mercury / Silicon 

19. In MS-Word to save file used keys : 

• Ctrl + S 

20. Dielectric is also called : 

• Insulator 

*Dielectrics are materials that don't allow current to flow. They are more often called insulators because they are the exact opposite of conductors.

21. In which value A.C current and voltage source usually specified - 

• RMS value 

22. A Multimeter can not measure : 

• Power, Frequency, Phase Angle 

23. No. of function keys available in Keyboard : 

• F1-F12 = 12 

24. Which is Light sensitive sensor : 

*Photodiode, Photoresistor, phototransistor, Photovoltaic light sensor [ Light sensors detect light and convert light energy to electrical signal output.

25. The output voltage of the 78M05 ICs is ........ : 

• 5V, +5A 

26. The voltage is applied to the cooling fan SMPS is : 

• 12V dc (150-280 Input Voltage) 

27. In Diode ...... bias condition apply : 

• Forward Bias 

28. Construction of Counter from : 

• Flip - Flop 

29. Process to add impurity to a pure semiconductor known : 

• Doping 

30. S.I unit of Magnetic Flux : 

• Weber [Wb] 

31. Polarized capacitor is charge at opposite polarity then : 

• Capacitor may be damage or Shot Circuit. 

32. The term PCB stands for : 

• Printed Circuit Board 

33. The diode can also act as : 

• Switch 

{ Diode is a semiconductor device that essentially acts as a one way Switch for current. It allows current to flow easily in one direction. } 

34. What is used in counters to measure time ? 

• Oscillators are the fundamental components used in counters to measure time.

35. If the input supply frequency is 50 Hz then the ouput ripple frequency of a bridge rectifier is : 

• 2f = 100Hz 

36. 1’s complement of 0110 is : 

• 1001 

37. Which circuit is used to air core inductor  ........... 

*[Air core inductors are primarily used in high-frequency applications.] 

38. What is name of the materials with four valance electrons ? : 

• Carbon Group 

39. What is the name of the semiconductor in its pure form : 

• Intrinsic Semiconductor 

*[ Equal no. of electrons and holes, Intrinsic means pure and without any impurity. ] 

40. Expansion of PMMC ? ..... 

*Permanent Magnet Moving Coil works on electromagnetic effect.

41. Determine physical size of resistor : ...... 

*[64bits or 32 bits - 64 bits] 

42. Choose NAND gate from below figures : 

• 
  
  
  
  

43. Which winding in a transformer, Electric Energy is give as Input ? 

*Primary winding 

44. Which electrode of Cathode Ray Tube [ CRT ] mainly controls the sharpness of the image on the screen? 

• The electrode in a Cathode Ray Tube (CRT) that mainly controls the sharpness of the image on the screen is the focusing electrode, also known as the focus anode or focusing anode.

45. Which parameter is measured by a Multimeter : 

• Voltage , Current, Resistance 

46. Unit of measuring frequency is : 

• Hertz [Hz] 

47. Name of the process, removing solder from a joint : 

• Desoldering 

48. A battery cell is a source that converts : 

• Chemical Energy to Electrical Energy 

49. Which of the following material is pure-semiconductor : 

• Silicon and Germanium 

50. No. of valance electrons of a semiconductor element is : 

• 4 

51. LCD : 

• Liquid Crystal Device 

52. DIAC is : 

• 2 - terminals device. 

*[DIAC - bidirectional] 

(Transistor & TRAIC : 3 Terminals) 

53. Other Name of Photo Resistor -- 

• Photo cell , Light dependent resistor [LDR] , Photo Conductive cell. 

54. Ammeter is used to measure : 

• Current [measuring device] 

55. Name of Triggering Device : 

• Schmitt trigger 

56. TRIAC is used for : 

*The TIAC is most commonly used semiconductor device for switching and power control of AC systems as the triac can be switched “ON” by either a positive or negative Gate pulse, regardless of the polarity of the AC supply at that time. TRIACs are a subset of thyristors and are related to silicon controlled rectifiers. 3 - terminal electronic components device. 

57. Name of Resistor Colour Code if resistor value is 33KOhm : 

• [33000 = 33 * 10^3] = Orange , orange & orange 

58. Carbon resistors : 

*are one of the most common types of electronics used.

59. Base of Octal no. system : 

• 8 

60. Zener diode acts as a : 

• Voltage Regulator 

61. Polarized Capacitor – 

*Capacitors with particular positive and negative polarities are known as polarized capacitors 

62. Other name of Flip - Flop : 

• Latch *[ 2 stable state] 

63. Use of LCR meter : 

*Measures physical property [known as Impedance] 

An LCR meter is used to measure the inductance (L), capacitance (C), and resistance (R) of electronic components.

64. Output of a Schmitt trigger is a : 

• Square wave 

*[The output will be a continuous square wave whose frequency depends on the values of R and C, and the threshold points of the Schmitt trigger.] 

65. Numerical based question [TTL NAND gate IC 7400 ohm] ...

66. Degenerative feedback is also called : 

• Negative Feedback System 

67. Time required to complete one cycle called : 

• Time Period 

68. Name of colour if its colour code is 5 : 

• Green 

69. Atomic weight of Silver (Ag) : 

• 108 

70. What is the current flowing through each diode in a Full wave rectifier ? 

*Half cycle of the Input signal. 

71. Printed Circuit Board is ........... soldered. 

• Soft soldering 

72. Ripple factor decreases by : 

• Increases capacitor value 

73. Dynamo converts : 

• Mechanical Energy to Electrical Energy 

74. Atomic weight of an element is addition of their : 

• Neutron + Proton 

75. ....... is an alloy in which one of the component metals is Mercury. : 

• Amalgam 

* Delta Metal : Cu(60%)+Zn(38%)+Fe(2%) : In making blades of an airplanes

Basic Mathematics and Reasoning

Note : Maths questions are not exact but this type of questions were comes in CITS exam.

Thanks.