Departmental (other) • 2025 • Paper-II
Testing method focussing on measuring temperature, power consumed and differential pressure to assess pump efficiency is called-
A)
Head testing
B)
Discharge testing
C)
Vibration testing
D)
Thermodynamic testing
Option D is correct: Thermodynamic testing.
Departmental (other) • 2025 • Paper-II
Vertical centrifugal pumps are also called-
A)
Bilateral pump
B)
Vertigo
C)
Negative pump
D)
Cantilever pumps
Option D is correct: Cantilever pumps.
Departmental (other) • 2025 • Paper-II
Hydrostatic testing of pump involves pressurizing the pump casing to ensure it can withstand-
A)
Weight
B)
Suction
C)
Operating pressure
D)
Position
Option C is correct: Operating pressure.
Departmental (other) • 2025 • Paper-II
A machine that uses an abrasive to remove material from a workpiece, shaping and finishing it to a desired form is called-
A)
Compacting machine
B)
Grinding machine
C)
Drilling machine
D)
Crimping machine
Option B is correct: Grinding machine.
Departmental (other) • 2025 • Paper-II
Pipes that are made using high frequency currents to form a bond between the edges of a metal is known as-
A)
ERW pipes
B)
PVC pipes
C)
UPVC pipes
D)
CPVC pipes
Option A is correct: ERW pipes.
Departmental (other) • 2025 • Paper-II
Define IC Engines. Describe the working of CI & SI Engine.
Departmental (other) • 2025 • Paper-II
Cooling system of DG set has to be checked regularly to prevent-
A)
Moisture
B)
Overheating
C)
Run hours
D)
Resistance
Option B is correct: Overheating.
Departmental (other) • 2025 • Paper-II
A steel pipe that exhibits high strength, durability and corrosion resistance due to the process of forming them from steel coils are known as-
A)
ERW pipes
B)
Square pipes
C)
Tin
D)
Cast Iron
Option A is correct: ERW pipes.
Departmental (other) • 2025 • Paper-II
The geometric increase method is useful for forecasting population in-
A)
Rapidly developing areas
B)
Warm areas
C)
Declining population areas
D)
Constant population area
Option A is correct: Rapidly developing areas.
Departmental (other) • 2025 • Paper-II
Describe the procedures for operation and maintenance of electric motor.
Departmental (other) • 2025 • Paper-II
The arithmetic increase method of population projection is calculated by adding average population increase per decade to the-
A)
Current population
B)
Previous population
C)
Average population
D)
Project population
Option A is correct: Current population.
Departmental (other) • 2025 • Paper-II
The most commonly used cell is
A)
lead-acid cell
B)
nickle-iron cell
C)
nickle-cadmium cell
D)
fuel cell
Option A is correct: lead-acid cell.
Departmental (other) • 2025 • Paper-II
The materials having permanent electric moments are called
A)
Antiferro-electric materials
B)
Dielectrics
C)
Electrolytes
D)
Semiconducting materials
Option B is correct: Dielectrics.
Departmental (other) • 2025 • Paper-II
The algebraic sum of instantaneous phase voltages in a three-phase circuit is equal to
A)
zero
B)
line voltage
C)
phase voltage
D)
phase current
Option A is correct: zero.
Departmental (other) • 2025 • Paper-II
“Any two terminal network can be replaced by a single current source I in parallel with a single resistance R .” The above statement is associated with
A)
Superposition theorem
B)
Thevenin’s theorem
C)
Norton’s theorem
D)
Millman’s theorem
Option C is correct: Norton’s theorem.
Departmental (other) • 2025 • Paper-II
Which of the following is a ceramic material?
A)
Leather
B)
MgO
C)
Invar
D)
Nylon
Option B is correct: MgO.
Departmental (other) • 2025 • Paper-II
Kirchoff’s law is applicable to .
A)
AC circuits only
B)
DC circuits only
C)
both AC and DC circuits
D)
passive networks only
Option C is correct: both AC and DC circuits.
Departmental (other) • 2025 • Paper-II
Which resistance material is preferred for standards?
A)
Manganin
B)
Platinum
C)
Nichrome
D)
German silver
Option A is correct: Manganin.
Departmental (other) • 2025 • Paper-II
“In a linear, bilateral network having more than one source, the current and voltage in any part of the network can be found by adding algebraically the effect of each source separately.” The above statement is associated with
A)
Superposition theorem
B)
Thevenin’s theorem
C)
Norton’s theorem
D)
Millman’s theorem
Option A is correct: Superposition theorem.
Departmental (other) • 2025 • Paper-II
Grounding wires are usually made of
A)
stainless steel
B)
aluminium
C)
galvanised steel
D)
cast iron
Option C is correct: galvanised steel.
Departmental (other) • 2025 • Paper-II
If the specific gravity of electrolyte in a lead acid battery is 1.20, it can be concluded that
A)
the battery has sulphated
B)
the battery is damaged and cannot be recharged
C)
the battery is half charged
D)
the battery is fully charged
Option C is correct: the battery is half charged.
Departmental (other) • 2025 • Paper-II
An electrical system is considered solidly earth
A)
if it is directly connected to earth electrode
B)
if it connected to earth electrode through fuse wire
C)
if it connected to earth electrode through earth switch
D)
if it connected to earth electrode through circuit breaker
Option A is correct: if it is directly connected to earth electrode.
Departmental (other) • 2025 • Paper-II
The external PT ratio is 33000/110V and external CT ratio is 400/1A. If the energy meter is calibrated for PT ratio 33000/110V, CT ratio -/1A then what will be the multiplying factor for the meter?
Departmental (other) • 2025 • Paper-II
Write down five advantages of vacuum circuit breakers.
Departmental (other) • 2025 • Paper-II
The most economical power factor for a consumer is generally
A)
0.95 lagging
B)
1
C)
0.6 lagging
D)
0.75 lagging
Option B is correct: 1.
