RRB JE 2015-27-09-2015-1 RRB Question Paper

RRB JE 2015 Question Papers

RRB JE 2015-27-09-2015-1 RRB Questions

41.
A sample of cement is said to be sound when it does not contain free
A.
Lime
B.
Silica
C.
Iron oxide
D.
Alumina
😑 View Answer Rough Work
ANSWER :
A. Lime
42.
The tensile strength of concrete is approximately what percent of compressive strength of concrete
A.
50%
B.
20%
C.
10%
D.
5%
😑 View Answer Rough Work
ANSWER :
C. 10%
43.
The eddy viscosity for turbulent flow is
A.
A function of temperature only
B.
A physical property of the fluid
C.
Dependent on the flow
D.
Independent of the flow
😑 View Answer Rough Work
ANSWER :
C. Dependent on the flow
44.
The type of surveying which requires least office work is
A.
Tacheometry
B.
Trigonometrical levelling
C.
Plane table surveying
D.
Theodolite surveying
😑 View Answer Rough Work
ANSWER :
C. Plane table surveying
45.
The ratio of volume of voids to the total volume of soil mass is called
A.
Air content
B.
Porosity
C.
Percentage air voids
D.
Voids ratio
😑 View Answer Rough Work
ANSWER :
B. Porosity
46.
Which is the purest form of iron?
A.
Cast iron
B.
Wrought iron
C.
Mild steel
D.
High carbon steel
😑 View Answer Rough Work
ANSWER :
B. Wrought iron
47.
Commonly used instruments in power system measurement are
A.
induction
B.
moving coil or iron
C.
rectifier
D.
electrostatic
😑 View Answer Rough Work
ANSWER :
A. induction
48.
Damping of the Ballistic galvanometer is made small to
A.
get first deflection large
B.
make the system oscillatory
C.
make the system critically damped
D.
get minimum overshoot
😑 View Answer Rough Work
ANSWER :
A. get first deflection large
49.
The rectifier instrument is not free from
A.
temperature error
B.
wave shape error
C.
frequency error
D.
both wave and frequency error
😑 View Answer Rough Work
ANSWER :
C. frequency error
50.
Alternating current is measured by
A.
induction ammeter
B.
permanent magnet type ammeter
C.
electrostatic ammeter
D.
moving iron repulsion type voltmeter
😑 View Answer Rough Work
ANSWER :
A. induction ammeter