Departmental (other) • 2023 • Engineering Paper-I
The organic impurities from sewage are removed by
A)
Preliminary treatment
B)
Primary treatment
C)
Secondary treatment
D)
Tertiary treatment
Option C is correct: Secondary treatment.
Departmental (other) • 2023 • Engineering Paper-I
Which is the fastest method of drilling and especially useful in unconsolidated formations?
A)
Cable tool method
B)
Water-jet boring method
C)
Hydraulic Rotary method
D)
Reverse Rotary method
Option B is correct: Water-jet boring method.
Departmental (other) • 2023 • Engineering Paper-I
In reverse osmosis (RO) the flow of solvent is due to
A)
Potential gradient
B)
Vapour pressure gradient
C)
Concentration gradient
D)
Osmosis solvent
Option A is correct: Potential gradient.
Departmental (other) • 2023 • Engineering Paper-I
Centrifugal pump works by imparting
A)
Potential energy
B)
Kinetic energy
C)
Heat energy
D)
Electrical energy
Option B is correct: Kinetic energy.
Departmental (other) • 2023 • Engineering Paper-I
Surge tanks are used
A)
for storage water
B)
to increase the velocity in a pipeline
C)
as overflow valves
D)
to guard against water hammer
Option D is correct: to guard against water hammer.
Departmental (other) • 2023 • Engineering Paper-I
Which of these diseases can happen from drinking contaminated water?
A)
Dengue
B)
Small pox
C)
Malaria
D)
Cholera
Option D is correct: Cholera.
Departmental (other) • 2023 • Engineering Paper-I
In pumping stations, the type of joint generally used, is
A)
Socket and spigot joint
B)
Flanged joint
C)
Expansion joint
D)
Dresser coupling joint
Option B is correct: Flanged joint.
Departmental (other) • 2023 • Engineering Paper-I
Which of the following motor is used where an extensive range of control is required
A)
AC Motor
B)
DC Motors
C)
Synchronous Motor
D)
Induction Motor
Option B is correct: DC Motors.
Departmental (other) • 2023 • Engineering Paper-I
Which of the following method is used to forecast the population of old and very large city?
A)
Arithmetical increase method
B)
Geometric progression method
C)
Graphical method
D)
Logistic curve method
Option A is correct: Arithmetical increase method.
Departmental (other) • 2023 • Engineering Paper-I
In which of the following applications DC series motor is used?
A)
Centrifugal Pump
B)
Motor Operation in DC and AC
C)
Water pump drive
D)
Starter for car
Option D is correct: Starter for car.
Departmental (other) • 2023 • Engineering Paper-I
What is tapped into when digging a well looking for water in the water cycle?
A)
An underground aquifer
B)
An underground river
C)
A sulfur spring
D)
An irrigation ditch
Option A is correct: An underground aquifer.
Departmental (other) • 2023 • Engineering Paper-I
Which process is used to remove dirt and sand from wastewater?
A)
Aeration
B)
Chlorination
C)
Sedimentation
D)
Flocculation
Option C is correct: Sedimentation.
Departmental (other) • 2023 • Engineering Paper-I
Priming is the process by which
A)
The suction pipe, delivery pipe, up to the delivery valve is filled with liquid after starting the motor from an outside source
B)
The suction pipe, delivery pipe, up to the delivery valve is filled with liquid before starting the motor.
C)
Only the suction pipe is filled with liquid before starting the motor from an outside source.
D)
Only the delivery pipe, up to the delivery valve, is filled with liquid before starting the motor from an outside source
Option B is correct: The suction pipe, delivery pipe, up to the delivery valve is filled with liquid before starting the motor..
Departmental (other) • 2023 • Engineering Paper-I
Justify why the DC ammeter cannot measure an alternating current
A)
AC is virtual
B)
AC cannot pass via DC ammeter
C)
The average value of complete cycle is zero
D)
AC switches its direction
Option C is correct: The average value of complete cycle is zero.
Departmental (other) • 2023 • Engineering Paper-I
Which one of the following gases plays a decisive role in affecting the climate of earth?
A)
Oxygen
B)
Nitrogen
C)
Carbon dioxide
D)
Hydrogen
Option C is correct: Carbon dioxide.
Departmental (other) • 2023 • Engineering Paper-I
The maximum pressure to which a pipe is subjected to during its operation, is known
A)
Working pressure
B)
Design pressure
C)
Test pressure
D)
Pipe pressure
Option A is correct: Working pressure.
Departmental (other) • 2023 • Engineering Paper-I
If we connect a DC motor across AC supply, then the motor will be
A)
It will not work
B)
Damages
C)
Speed will be reduced
D)
Works efficiently
Option B is correct: Damages.
Departmental (other) • 2023 • Engineering Paper-I
As per IS 10500 : 2012, for drinking water in the absence of alternate source of water, the permissible limits for chloride and sulphate, in mg/ L, respectively are
A)
250 and 200
B)
1000 and 400
C)
200 and 250
D)
500 and 1000
Option B is correct: 1000 and 400.
Departmental (other) • 2023 • Engineering Paper-I
A pressure conduit laid underground, may not be subjected to
A)
Internal pressure of water
B)
Pressure due to external load
C)
Longitudinal temperature stress
D)
Longitudinal stresses due to unbalanced pressure to bends
Option C is correct: Longitudinal temperature stress.
Departmental (other) • 2023 • Engineering Paper-I
In DOL fuses are provided to protect against
A)
Short circuit protection
B)
Over voltage
C)
Over current
D)
Overload
Option A is correct: Short circuit protection.
Departmental (other) • 2023 • Engineering Paper-I
The efficiency of the DC motor at maximum power is
A)
90%
B)
100%
C)
Around 80%
D)
Less than 50%
Option D is correct: Less than 50%.
Departmental (other) • 2023 • Engineering Paper-I
How does induce emf in DC motor react to supply voltage
A)
It will aid the supply voltage
B)
It will be double the supply voltage
C)
It will oppose the supply voltage
D)
It will be half of the supply voltage
Option C is correct: It will oppose the supply voltage.
Departmental (other) • 2023 • Engineering Paper-I
How does a pit toilet or latrine work?
A)
by separating sludge and scum from the liquid wastewater.
B)
by holding feaces’ and urine in a pit or tank until it can be removed for further treatment
C)
by allowing feaces and urine to flow directly to a drain field for bacteria to continue their work.
D)
by mixing in air to speed up the breakdown of liquid wastewater.
Option B is correct: by holding feaces’ and urine in a pit or tank until it can be removed for further treatment.
Departmental (other) • 2023 • Paper-II
Under what circumstances a Government servant may be placed under suspension? What are the points that a Disciplinary Authority should consider before placing a Government servant under suspension?
Departmental (other) • 2023 • Paper-II
Explain in brief the procedures to be followed by departmental officer for paying money into Government account as per CTR -89.
