RRB JE 2015-26-09-2015-1 RRB Question Paper

RRB JE 2015 Question Papers

RRB JE 2015-26-09-2015-1 RRB Questions

41.
When water is added to cement
A.
Chemical reaction starts
B.
Heat is absorbed
C.
Heat is generated
D.
Impurities are washed out
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ANSWER :
C. Heat is generated
42.
Pascal-second is the unit of
A.
Pressure
B.
Kinematic viscosity
C.
Dynamic viscosity
D.
Surface tension
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ANSWER :
C. Dynamic viscosity
43.
Which of the following is not used in measuring perpendicular offsets?
A.
Line ranger
B.
Steel tape
C.
Optical square
D.
Cross staff
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ANSWER :
A. Line ranger
44.
A fully saturated soil is said to be
A.
One phase system
B.
Two phase system with soil and air
C.
Two phase system with soil and water
D.
Three phase system
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ANSWER :
C. Two phase system with soil and water
45.
Which of the following trees yields hard wood?
A.
Deodar
B.
Chir
C.
Shishum
D.
Pine
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ANSWER :
C. Shishum
46.
IS 800 : 2007 is based on
A.
Elastic design method
B.
Ultimate load method
C.
Working stress method
D.
Limit state method
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ANSWER :
D. Limit state method
47.
An ohmmeter is a
A.
moving iron instrument
B.
moving coil instrument
C.
dynamometer instrument
D.
hot wire meter
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ANSWER :
B. moving coil instrument
48.
For measuring a very high resistance we should use
A.
Kelvin's double bridge
B.
Wheat stone bridge
C.
Meggar
D.
Schering bridge
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ANSWER :
C. Meggar
49.
The electrical power to a meggar is provided by
A.
battery
B.
permanent magnet D.C. generator
C.
AC generator
D.
either AC or DC generator
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ANSWER :
B. permanent magnet D.C. generator
50.
In a meggar, controlling torque is provided by
A.
spring
B.
gravity
C.
coil
D.
eddy current
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ANSWER :
C. coil