Electrician Mostly Asked MCQ PDF Part Six For RRB ALP/Technician CBT 2
Here we are providing mostly asked MCQ PDF of Electrician Trade For RRB ALP/Technician CBT 2 stage exam,It will be provide help to aspirants who are going to appear this exam.Next part will be upload tomorrow.
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1.When the dielectric is homogeneous,the potential gradient is
A.uniform
B.non-uniform
C.zero
D.any of these
Answer-A
2.The potential gradient across the material of low permittivity is than across the material of high permittivity.
A..smaller
B.greater
C.both these
D.none of these
Answer-A
3. ________field is associated with the capacitor.
A.Electric
B.Magnetic
C.Both of these
D.None of these
Answer-A
4.A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is
A.50 joules
B.150 joules
C.200 joules
D.250 joules
Answer-D
5.A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is
A.62 x 10⁵ V/m
B.72 x 10⁵ V/m
C.82 x 10⁵ V/m
D.92 x 10⁵ V/m
Answer-B
6.Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is
A.0.56 x 10⁵ m/s²
B.1.5 x 10⁵ m/s²
C.1.6 x 10⁵ m/s²
D.1.76 x 10⁵ m/s²
Answer-D
7.The total deficiency or excess of electrons in a body is known as
A.current
B.voltage
C.potential gradient
D.charge
Answer-D
8.The relative permittivity has the following units
A.F/m
B.m/F
C.Wb/m
D.no units
Answer-C
9.The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as
A.pholoelectric effect
B.chemical effect
C.magnetic effect
C.induction
Answer-D
10.A unit tube of flux is known as tube
A.Newton
B.Faraday
C.Michale
D.None of these
Answer-B
11.The number of Faraday tubes of flux passing through a surface in an electric field is called
A.electric flux
B.electric flux density
C.magnetic flux density
D.electric charge density
Answer-A
12.The unit of electric intensity is
A.N/C²
B.Wb/m²
C.N/C
D.N²/C
Answer-C
13.The value of E within the field due to a point charge can be found with the help of
A.Faraday’s laws
B.Kirchhoff s laws
C.Coulomb’s laws
D.none of these
Answer-C
14.___at a point may be defined as equal to the lines of force passing normally through a unit cross section at that point.
A.Electric intensity
B.Magnetic flux density
C.Electric flux
D.None of these
Answer-A
15.Electric intensity at any point in an electric field is equal to the at that point.
A.electric flux
B.magnetic flux density
C.potential gradient
D.none of these
Answer-C
16.Electric displacement is a______quantity.
A.scalar
B.vector
C.both of these
D.none of these
Answer-B
17.____at a point is equal to the negative potential gradient at that point.
A.Electric intensity
B.Electric flux
C.Magnetic flux
D.Magnetic flux density
Answer-A
18.The unit of dielectric strength is given by
A.V/m
B.V²/m
C.m/V
D.m/V²
Answer-A
19.Dielectric strength ______ with increasing thickness
A.increases
B.decreases
C.remains unaltered
D.none of these
Answer-B
20.The property of a capacitor to store electricity is called its
A.capacitance
B.charge
C.energy
D.none of the above
Answer-A
21.___ is that property of a capacitor which delays any change of voltage across it.
A.Inductance
B.Capacitance
C.Potential gradient
D.None of these
Answer-B
22.A capacitance of 100 µF is connected in series with a resistance of 8000 Ohm. The time constant of the circuit is
A.0.2 s
B.0.4 s
C.0.6 s
D.0.8 s
Answer-D
23.In a cable capacitor, voltage gradient is maximum at the surface of the
A.earth
B.conductor
C.sheath
D.insulator
Answer-B
24.The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its______value.
A.37, initial
B.63.2, initial
C.63.2, final
D.37, final
Answer-C
25.The capacitance of a capacitor is influenced by
A.plate area
B.plate separation
C.nature of dielectric
D.all of these
Answer-D
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