Departmental (other) • Engineering Paper-I
When a piping system is made up primarily of friction head and very little of vertical lift, then pump characteristics should be
A)
horizontal
B)
nearly horizontal
C)
steep
D)
first rise and then fall
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'horizontal' (Option A).
Departmental (other) • Engineering Paper-I
Centrifugal pump is started with its delivery valve
A)
kept fully closed
B)
kept fully open
C)
irrespective of any position
D)
kept 50% open
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'kept 50% open' (Option D).
Departmental (other) • Engineering Paper-I
The internal pressure, to which a water supply pipe is subjected to, is :
A)
Full hydrostatic pressure when water in the pipe is at rest
B)
Pressure head and velocity head in the pipe, when flow at full velocity is taking place
C)
(a) + water hammer pressure
D)
(b) + water hammer pressure
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Pressure head and velocity head in the pipe, when flow at full velocity is taking place' (Option B).
Departmental (other) • Engineering Paper-I
The valve, which is provided in the water distributing pipes at street corners and pipe junctions to control the flow in the distribution system, is
A)
An air valve
B)
a sluice valve
C)
A scour valve
D)
a reflux valve
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'An air valve' (Option A).
Departmental (other) • Engineering Paper-I
If induction motor is direct switched-on then it will develop
A)
1.5 times their full load torque
B)
1.5 to 2.5 times their full load torque
C)
2.5 times their full load torque
D)
1.5 to 5 times their full load torque
Based on established principles in Electrical / Electronics Engineering, the correct and most appropriate choice is '1.5 to 2.5 times their full load torque' (Option B).
Departmental (other) • Engineering Paper-I
The means of promoting hygiene through the prevention of human contact with the hazards of wastes especially feces is called
A)
Hygiene control
B)
Disease prevention
C)
Sanitation
D)
Hygiene
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'Hygiene control' (Option A).
Departmental (other) • Engineering Paper-I
The advantages of twin pit latrine is
A)
Night soil collection
B)
More costly and requires more space
C)
Emptying one pit gives manure
D)
Lasting use of pit latrine
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'More costly and requires more space' (Option B).
Departmental (other) • Engineering Paper-I
In a centrifugal pump, the liquid enters the pump
A)
at the top
B)
at the bottom
C)
at the center
D)
from sides
Based on established principles in Mechanical Engineering, the correct and most appropriate choice is 'at the bottom' (Option B).
Departmental (other) • Engineering Paper-I
Blue baby disease may be caused in infants due to drinking waters, containing higher concentrations of :
A)
nitrites
B)
nitrates
C)
lead
D)
arsenic
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'nitrites' (Option A).
Departmental (other) • Engineering Paper-I
A water sedimentation tank, under normal conditions, can remove suspended impurities, up to, say :
A)
30%
B)
50%
C)
70%
D)
90%
Based on established principles in the relevant subject area, the correct and most appropriate choice is '70%' (Option C).
Departmental (other) • Engineering Paper-I
The Mizoram Water Supply (control) Rules contain a clause ‘The rates of water and other charges mentioned under Rule 7 may be revised by the Department by issue of notification not more than __________’.
A)
twice in a year
B)
half yearly
C)
once in a year
D)
three times
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'twice in a year' (Option A).
Departmental (other) • Engineering Paper-I
Steel pipes are :
A)
Easily affected by acidic and alkaline atmospheric effects
B)
Unable to withstand high negative pressures
C)
Liable to quick rusting
D)
All of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'All of these' (Option D).
Departmental (other) • Engineering Paper-I
Hand pump India Mark-II and India Mark-III can be easily identify from :
A)
Water tank
B)
Riser
C)
Casing pipe
D)
All of these
Based on established principles in the relevant subject area, the correct and most appropriate choice is 'All of these' (Option D).
