DGCA Module 03 (3rd Session of 2019) | Download Now

DGCA Module 03 Electrical Fundamentals paper from the 3rd Session of 2019 focused on basic electrical principles, including current, voltage, resistance, AC/DC theory, capacitors, inductors, and fundamental circuit analysis relevant to aviation systems.

DGCA Module 03

(3rd Session of 2019)

1. Magnetism and electromagnetism related to.

A) Permanence

B) Permeability

C) Permittivity

D) None

2. Resistance of conductor depend on a.

A) material of conductor

B) length of conductor

C) cross sectional area

D) all also depend on temperature.

3. If maximum Induced voltage in coil, then flux linkage.

A) minimum

B) maximum   

C) Zero    

4. If number of poles 20 and RPM=300, then frequency.  

 A ) 50hz

B) 150 hz  

C) 1000 hz

6. Resistance of conductor independent of. 

A) Mass of conductor

B) Length of conductor

C) Temperature of conductor

7. Capacitance falls with.

A) Voltage

B) Frequency  

C) Distance between plates

8. When a metal losses electron it becomes?

A) Negative ion

B) Neutral

C) Positive ion  

9. Very small weight.   

A) Electron  

B) Proton  

C) Neutron   

10. Positive charge is.   

A) Electron  

B) Proton   

C) Neutron

11. Negative charge is.   

A) Electron  

B) Proton   

C) Neutron 

12. The type of cell in which negative plate deteriorate and goes in   solution. 

A) Primary cell  

B) Secondary cell  

C) Lead-acid cell

13. If no load condition auto transformer?

A) Full load current

B) No current

C) Only magnetizing current  

14. Negative temperature coefficient. 

A) Electrolyte or carbon   

B) Thermistor

C) Silicon

15. Synchronous motor speed depend on. 

A) Number of poles

B) Depend on frequency  

C) Voltage

16. Magnetic potential.

A) Vector quantity

B) Zero

C) Scalar quantity  

17. MMF. 

B) Product of current and turns

B) Work done

C) Magnetic flux

18. Transformer Connected To Loss?

A) Iron loss  

B) Copper loss in primary winding  

C) Copper loss in secondary winding  

D) All   

19. Unit of resistivity. 

A) Ohm

B) Ohm-cm

C) Ohm meter  

20. Thermistor is negative temperature coefficient?

A) Increase temperature, resistance decreases 

B) Increase temperature, resistance increases

C) No change in resistance with temperature

21. Current flow is minimum or zero magnetic lines of for. 

 A ) parallel

B) Perpendicular  

C) Both   

22. Fourth band indicate?

A) Temperature coefficient

B) Tolerance

C) Resistance value

23. The ratio of metal to the absolute permeability of vacuum is. 

A) absolute permeability  

B) relative permeability  

C) permeability  

24. Commutator.  

A) convert AC to DC  

B) made of high grade copper   

C) all segment are insulated at each other

D) all the above and each segment is connected to each parallel coil  

25. Capacitance depend on.

A) Plate material

B) Plate area, distance between them

C) Voltage across the plates

26. In inductive circuit.

A) current lags voltage by 90 degree or quarter cycle

B) Current leads voltage by 90 degrees

C) Current and voltage are in phase

27. Mark the correct statement.  

A) lap winding has more EMF than wave winding  

B) wave winding has more current than lap winding  

C) lap winding has more current than wave winding  

D) ALL  

28. 1kwh is.

A) Equal to 3600 J

B) Equal to 3600 J/s

C) Equal to 3600 s

29. Power is rated in?

A) Kilowatts

B) Watts-hour

C) Joules/second

30. If thermistor is positive temperature coefficient resistance, if temperature increases.  

A) Increases  

B) Decrease   

C) same  

31. Magnetism and electromagnetism related to AP.   

A) permanence  

B) permeability  

C) permittivity  

D) none  

32. EMF induced in coil?  

A) A coil place near another coil in which AC current is flowing   12/35  

B) A coil stationary and magnetic moving back and forth near it 

 C ) both a and b  

33. Unit of capacitance. 

A) Volt/Ampere

B) Ohm

C) Watt

D) Coulomb/volt  

34. Regarding ohm’s law which one is correct.

A) V = I + R

B) V = I/R

C) V=IR  

35. Filter used in radio and television. 

A) Band pass filter  

B) low pass filter  

C) Band stop filter   

36. The strength of pole is. 

 A ) directly proportional to the pole strength  

B) directly proportional to the square of the distance between them  

C) directly proportional to the absolute permeability of the surrounding medium  

D) all   

37. Synchronous motor when pull out.  

A) pool in torque   

B) pull out torque  

C) running torquê   

38. Property associated with magnetism. 

A) Permittivity  

B) absolute permeability  

C) relative permeability  

D) absolute and relative permeability

39. Trickle charge is used to. 

A) Keep battery fresh and fully charged  

B) Discharge the battery slowly

C) Overcharge the battery rapidly

40. MTCS regarding ohm’s law.

A) ohm’s law determine voltage, current, resistance in DC circuit as well as in AC circuit

B) Ohms law state that physical condition remains same in AC circuit  

C) ohm’s law determine energy consumed in circuit

D) A and B are correct  

41. A 24 volt DC battery provide 5 coulomb charge in given 2 second, then what is the resistance of conductor.  

A) 4.8 ohm  

B) 9.6 ohm 

C) C 2.5 ohm  

42. A filter rejects undesirable number of frequency in DC system.

A) high pass filter

B) low pass filter

C) Band pass filter   

D) band reject  

43. Attenuation is measured in.

A) decibel   

44. The resistance of conductor is 0.02ohm per foot, and the length is 20 foot. If current is applied through conductor is 0.5 Ampere, what is the voltage applied across it.

 A ) 2 V  

B) 0.2V  

C) 0.02 V

D) 20 V  

45. The internal resistance of battery is discharge condition will be.   

A) more than in charge condition  

B) more in discharge condition  

C) zero  

46. Transformer losses when load is connected.   

A) Net flux through core  

B) Core loss  

C) iron loss  

D) both a and b  

47. To counteract field distortion which winding is used.  

A) Interpol winding  

B) compensating winding  

C) stator winding

48. 1 joule of work done in one second then power. 

A) 1 watt

B) 1 newton

C) 1 volt

49. The property to oppose any charge in direction of current or flux   through it is. 

A) inductance 

B) self-inductance  

C) self-induced EMF  

D) induced EMF  

50. In a three phase circuit.  

A) voltage same in all phases  

B) current same in all phases  

C) Current same in all phases and at same angle  

D) all

51. EMF produced depends on.

A) proportional to charge of flux  

B) proportional to rate of charge of flux  

C) reciprocal to rate of charge of flux  

52. Static charge dissipates in-flight by.

A) landing gear  

B) static weeks  

C) antenna  

D) all

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