DGCA MODULE 3 ELECTRICAL FUNDAMENTAL QUESTIONS
Note- please cross check the answers, do not totally depend on marked answer
1) Unit of electricity is
a) Coulomb
b) Current
c) Volt
2) MMF (Magneto Motive force ) is
a) Force
b) Power
c) Potential difference
3) For an electrical circuit
a) The circuit has power supply voltage source
b) The circuit provide a complete path for the current flow
c) The circuit has a resistance
Verify the statement given above and mark the correct answer
A) true, true ,true
B) true, true, false
C) true, false,false
4) Regard the following statements
a) The quantity of charge is determined by the attraction or repulsion force
b) The tendency of charge to repel or attract each other is caused by physical force
Verify the statement given above and mark the correct answer
A) true, true ,
B) true, false
C) false,false
5) If 100 bulb are connected in series, if one bulb is fused then
a) All will fused
b)Non will glow
c) All will glow
DGCA MODULE 3 QUESTIONS , DGCA MODULE 3 NOTES ,DGCA MODULE 3 ONLINE QUIZ
6) In 3 phase system
a) The voltage should be equal in magnitude
b) The voltage direction changes equal with an equal phase angle
c) The current should be equal in magnitude and varies in direction with equal phase angle
d)AOA
7) The mass of an electron is compared to it charge
a) Very small
b) Large
c) Small
d) Same
8) What is the max. no. of electrons in shell M
a) 18
b) 32
c) 16
9) If an atom is stable (neutral) when
a) No. proton equal to no. of electron
b)No. of electron more than no. of proton
c) No. proton more than no. of electron
10) Which substance is diamagnetic
a) Iron
b)Iron-nickel
c) Iron-copper
d) Bismuth
11) The principle of magnetism depends on
a) Permittivity
b)Absolute permeability
c) Relative permeability
d) b and c both
12) Material which have a steady magnetic field has
permeability
a) High
b) Low
c) Medium
13) MTCS regarding Ohms Law
a) It is used in D.C. & a modified version of this can be used in
A.C.
b) For ohms law physical remain same
c) The temperature will vary
d) Both a and b
14) If R – resistance of conductor
A – cross section area
L – length of conductor
ρ – resistivity then
a) A=ρL/R
b) L=ρR/A
c) A=ρR/l
15) If the thermisters have negative temperature co-efficient then resistance ____________ with sensed temperature
a) Increase
b)Decrease
c) Not affected
DGCA MODULE 3 QUESTION BANK
16) If the work done of 1 jule is performed in 1 sec. then the power will be
a) 1 watt
b) 10 Watt
c) 100 watt
d) 1000 Watt
17) If the work done of 100 Jule is performed in 100 sec. then the power will be
a) 10 watt
b) 100 Watt
c) 1 watt
d) 1000 watt
18) If the length of a conductor is 10meter and cross sectional area is 100 meter2 and the resistance is 5x10-8
a) 6x10-7 Ohm meter
b) 7x10-7 Ohm meter
c) 5x10-7 Ohm meter
19) The electric power mostly developed by
a) Electro magnetic induction
b) Peizo electricity
20) IN color code system If the conductor has blue band yellow band ( from left to right ) then the numerical digit value are
a) 46
b) 64
c) 74
d) 84
21) If a conductor has resistance of 5Ω and current supplied to the conductor 5A then the power
a) 25 watt
b) 5 Watt
c) 125 Watt
22) Form factor is
a) ratio of rms value to average value
b)ratio of peak value to rms value
c) ratio of peak value to average value
23) Two capacitor of capacitance of 5μF each connected in parallel then the total capacity
a) 10 μF
b) 2 μF
c) 15 μF
d) 20 μF
24) The unit of capacitance
a) q/V
b) V/q
c) Vq
25) The conductor made of ceramic substance
a) It is made by depositing substance over ceramic rod
b) The resistance of this type of resisters is accurate
c) Both a and b
26) The capacitive reactance
a) False with frequency
b) Rise with frequency
c) Not affected
27) The induce electro magnetic force in a close loop of wire is depend on
a) Change of flux
b) Rate of change of flux
c) Flux
28) If a circuit containing resistance , inductance then
a) Current will lag voltage with an angle slightly less than 90°
b) The current will lead voltage with an angle slightly long than 90°
c) Current lags voltage by 90°
29) If voltage is applied to a primary winding and secondary is open then the power will draw
a) Fully primary
b)Only magnetizing
30) Ideal transformer has
a) Loss of flux
b) Core loss
c) Hysteresis
d)NOT
31) If the all battery are connected in parallel then the voltage________and __________ current capacity
a) Small, large
b) Large, small
c) Large, large
32) __________ filter is used to pass all frequencies above and below a particular range set by component values
a) High pass filter
b) Band pass filter
c) Band stop filter
33) The frequencies related component are
a) Resistance & inductance
b) Capacitance & resistance
c) Inductance & capacitance
d)None
34) Lap winding
a) High voltage and low current generator
b)High current and low voltage generator
c) Low current and low voltage generator
35) When a coil rotate in magnetic field the e.m.f. is induced in this, produce a current in
a) Same direction of source current
b)Opposite direction of source current
c) No current produce
36) Definition of back e.m.f.
a) Front e.m.f.
b) Black e.m.f.
c) Back e.m.f.1
37) Current flowing through the armature sets of electro magnetic field in the winding these new field tend to distort are bend the magnetic flux, it is called armature reaction, to contract this armature relation the winding is used
a) Lap winding
b) Compensating winding
c) interpoles winding
38) The speed of an A.C. motors depends upon
a) the no. of stator poles
b)frequency of the electrical source power
39) When an uncharged body is come in contact with the charged body then it will charged
a) Induction 1doubt
b) Conduction
c) Electro magnetic induction
40) Transformer ratede in
a) Watt
b) kWatt
c) kVA
d) kAR
41) The substance having valance electron more than 4
a) Conductor
b)Insulator
c) Semi conductor
42) The substance having balance electron less than 4
a) Conductor
b)Insulator
c) Semi conductor
43) Reactive power
a) Wastage power in reaction of the circuit
b)Gain power in circuit
c) none
44) 1 kWh is equal to
a) 3600 J
b) 3600 kJ
c) 36000 kJ
45) What is the flux behavior when no load on the transformer
a) The net flux flows through the core
b) Core loss
c) Iron loss
d) Both a and b
46) In the case of D.C. motor the hysteresis losses and eddy current losses come under which losses
a) Mechanical losses
b) Electrical losses
This paper is prepared with my best of knowledge, if any question is wrong please suggest in comment box. Thanks for your visit.
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