RRB JE 2015-16-09-2015-3 RRB Question Paper

RRB JE 2015 Question Papers

RRB JE 2015-16-09-2015-3 RRB Questions

11.
Arc stability is better with
A.
AC welding
B.
DC welding
C.
Both AC and DC welding
D.
Specially designed wave forms
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ANSWER :
B. DC welding
12.
The acetylene cylinder is filled with a material saturated with
A.
Calcium carbide
B.
Calcium oxide
C.
Acetone
D.
Acetylene
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ANSWER :
C. Acetone
13.
Which one of the following processes results in the best accuracy of the hole made?
A.
Drilling
B.
Reaming
C.
Broaching
D.
Boring
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ANSWER :
C. Broaching
14.
The most important function of the cutting fluid is to
A.
Provide lubrication
B.
Cool the tool and work piece
C.
Wash away the chips
D.
Improve surface finish
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ANSWER :
B. Cool the tool and work piece
15.
A capacitor is basically constructed of
A.
Conductor and Semiconductor
B.
Conductor and Dielectric
C.
Two conductors separated by a dielectric
D.
Two dielectric separated by a conductor
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ANSWER :
C. Two conductors separated by a dielectric
16.
Electron Volt is a unit of
A.
Voltage
B.
Charge
C.
Momentum
D.
Energy
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ANSWER :
D. Energy
17.
No winding resistance means
A.
Primary windings have constant resistance
B.
Secondary windings have infinite resistance
C.
No ohmic power loss
D.
Infinite resistive voltage drop
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ANSWER :
C. No ohmic power loss
18.
Short circuit test on transformer is also known as
A.
Capacitance Test
B.
Impedance Test
C.
Inductance Test
D.
Current Test
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ANSWER :
B. Impedance Test
19.
Distribution transformers have the rating of
A.
up to 50 kVA
B.
up to 100 kVA
C.
up to 150 kVA
D.
up to 200 kVA
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ANSWER :
D. up to 200 kVA
20.
Frequency of a generator when the number of poles are 8 and speed is 750 rpm will be
A.
50 Hz
B.
52 Hz
C.
60 Hz
D.
65 Hz
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ANSWER :
A. 50 Hz