RRB JE 2015-26-09-2015-2 RRB Question Paper

RRB JE 2015 Question Papers

RRB JE 2015-26-09-2015-2 RRB Questions

11.
In sand moulding the bottom flask is called
A.
Cope
B.
Drag
C.
Fillet
D.
Riddle
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ANSWER :
B. Drag
12.
Cast iron pipes are cast by
A.
Die casting process
B.
Centrifugal casting process
C.
Investment casting process
D.
Vaccum Moulding process
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ANSWER :
B. Centrifugal casting process
13.
Swagging is an operation of
A.
Hot rolling
B.
Forging
C.
Extrusion
D.
Piercing
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ANSWER :
B. Forging
14.
In Die cutting operation, punching a number of holes in a sheet is called
A.
Perforating
B.
Parting
C.
Notching
D.
Lancing
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ANSWER :
A. Perforating
15.
The flow of current in solids is due to
A.
electrons
B.
electrons and ions
C.
atoms
D.
atoms and nucleus
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ANSWER :
A. electrons
16.
Ohm's law is applicable for
A.
conductors only
B.
superconductors only
C.
conductors and semiconductors
D.
semiconductors only
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ANSWER :
A. conductors only
17.
"The algebraic sum of all the currents meeting at a point in a circuit is equal to zero." This statement is
A.
Kirchoff's Junction Rule
B.
Ampere Circuital Law
C.
Kirchoff's loop Rule
D.
Lenz Rule
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ANSWER :
A. Kirchoff's Junction Rule
18.
In a DC generator, the critical resistance refers to the resistance of
A.
brushes
B.
field
C.
armature
D.
load
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ANSWER :
B. field
19.
A transformer core is laminated in order to prevent
A.
current leakage
B.
eddy currents loss
C.
oil leakage
D.
hysterisis loss
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ANSWER :
B. eddy currents loss
20.
HRC fuses on a transformer provide protection against
A.
insulation failure
B.
internal faults
C.
external faults
D.
low oil level
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ANSWER :
C. external faults