Departmental (other) • 2026 • Engineering Paper-I (Civil Wing)
What is the number of bricks taken in analysis of cost for 1sqm 7.5cm thick (brick on edge) brick wall?
A)
37.7nos
B)
35.5 nos
C)
30 nos
D)
40.7nos
Option A is correct: 37.7nos.
Departmental (other) • 2026 • Engineering Paper-I (Civil Wing)
Stress is usually measured by:
A)
Pressure along the depth of 1m length
B)
Intensity of force per unit area
C)
Weight on a structure
D)
The area of force exerted
Option B is correct: Intensity of force per unit area.
Departmental (other) • 2026 • Engineering Paper-I (Civil Wing)
The most important purpose of frog in a brick is to:
A)
Emboss manufacturer’s name
B)
Reduce the weight of brick
C)
Form keyed joint between brick and mortar
D)
Improve insulation by providing ‘hollows’
Option C is correct: Form keyed joint between brick and mortar.
Departmental (other) • 2026 • Engineering Paper-I (Civil Wing)
The minimum modulus of elasticity in bending of timber recommended for constructional purposes is:
A)
Above 12.5kN/mm2
B)
9.8kN/mm2
C)
Above 5.6kN/mm2
D)
10.0kN/mm2
Option B is correct: 9.8kN/mm2.
Departmental (other) • 2026 • Engineering Paper-I (Civil Wing)
Vicat’s apparatus is used for testing:
A)
Initial and Final Setting time of cement
B)
Specific gravity of cement
C)
Fineness of Cement
D)
Soundness of Cement
Option A is correct: Initial and Final Setting time of cement.
Departmental (other) • 2026 • Engineering Paper-I (Civil Wing)
The stainless consists of:
A)
16% Chromium
B)
35% nickel
C)
39% nickel
D)
12-15% manganese
Option A is correct: 16% Chromium.
Departmental (other) • 2026 • Engineering Paper-I (Civil Wing)
Aluminium can be: 1. Riveted 2. Welded 3. Soldered. Of the above:
A)
2and 3 are correct
B)
1 and 2 are correct
C)
1 and 3 are correct
D)
1,2 and 3 are correct.
Option D is correct: 1,2 and 3 are correct..
Departmental (other) • 2026 • Paper-II
Which devices are connected directly to the secondary of a Current Transformer?
A)
Voltmeters and potential coils of wattmeters
B)
Ammeters and current coils of wattmeters
C)
Frequency meters
D)
Power factor indicators
Option B is correct: Ammeters and current coils of wattmeters.
Departmental (other) • 2026 • Paper-II
Which statement about power factor is INCORRECT?
A)
A power factor of 1is ideal, it means all power drawn from the mains is used by the load.
B)
A low power factor increases the current in the system, leading to higher line losses.
C)
A low power factor improves the voltage regulation of the transmission line.
D)
Power factor is defined as the ratio of real power to apparent power
Option C is correct: A low power factor improves the voltage regulation of the transmission line..
Departmental (other) • 2026 • Paper-II
In an LT bare conductor overhead line, which type of insulator is typically used at dead-ends and corner poles?
A)
Pin insulator
B)
Strain (or Shackle) insulator
C)
Suspension insulator
D)
Post insulator
Option B is correct: Strain (or Shackle) insulator.
Departmental (other) • 2026 • Paper-II
Why are guard wires or anti-climbing devices installed on 132kV transmission towers?
A)
To increase the mechanical strength of the tower
B)
To protect lines from birds
C)
To deter unauthorized individuals from climbing the tower
D)
To reduce corona loss
Option C is correct: To deter unauthorized individuals from climbing the tower.
Departmental (other) • 2026 • Paper-II
Why is the secondary of a current transformer (CT) always shorted under operating conditions?
A)
Protect the windings
B)
Avoid core saturation and high voltage induction
C)
Keep it safe for human beings
D)
Protect the primary circuit
Option B is correct: Avoid core saturation and high voltage induction.
Departmental (other) • 2026 • Paper-II
What is the fundamental working principle of a Differential Relay used for transformer protection?
A)
It measures the impedance (Z) to the fault.
B)
It detects gas accumulation in oil-filled tanks.
C)
It compares the currents entering and leaving the protected zone.
D)
It trips when the voltage exceeds safe limits.
Option C is correct: It compares the currents entering and leaving the protected zone..
Departmental (other) • 2026 • Paper-II
Which relay is primarily used to protect transformers against external short-circuits and persistent overloads?
A)
Differential relay
B)
Buchholz relay
C)
Overcurrent relay
D)
Restricted Earth Fault (REF) relay
Option C is correct: Overcurrent relay.
Departmental (other) • 2026 • Paper-II
What is the primary purpose of a power substation?
A)
To generate electrical energy
B)
To convert AC to DC power
C)
To change voltage levels and switch electrical circuits
D)
To reduce current to zero
Option C is correct: To change voltage levels and switch electrical circuits.
Departmental (other) • 2026 • Paper-II
What electrical quantity is measured by integrating power with respect to time, typically displayed on panel Energy Meters?
A)
Apparent Power (kVAh)
B)
Peak Demand (kVA)
C)
Active/Reactive Energy (kWh / kVARh)
D)
Instantaneous Power (kW)
Option C is correct: Active/Reactive Energy (kWh / kVARh).
Departmental (other) • 2026 • Paper-II
How is an Ammeter typically connected in an electrical panel for measuring heavy substation currents?
A)
Directly in series with the main HT line
B)
In parallel with the main load
C)
In series with the secondary of a Current Transformer (CT)
D)
Connected across a potential divider
Option C is correct: In series with the secondary of a Current Transformer (CT).
Departmental (other) • 2026 • Paper-II
A lightning arrester is always connected:
A)
In series with the line
B)
Between the line and earth
C)
Between the transformer and load
D)
In parallel with the circuit breaker
Option B is correct: Between the line and earth.
Departmental (other) • 2026 • Paper-II
Which device is specifically used to protect transformers from high-voltage surges caused by lightning?
A)
Lightning arrester / Surge arrester
B)
Circuit Breaker
C)
Isolator
D)
Current Transformer
Option A is correct: Lightning arrester / Surge arrester.
Departmental (other) • 2026 • Paper-II
What is the primary purpose of earthing?
A)
To increase the resistance of the circuit
B)
To prevent electric shock by providing a low-resistance path for faulty current
C)
To increase the power factor of the system
D)
To protect against over-currents only
Option B is correct: To prevent electric shock by providing a low-resistance path for faulty current.
Departmental (other) • 2026 • Paper-II
What is the primary purpose of measuring soil resistivity?
A)
To test cable insulation
B)
To design an effective and safe earthing/grounding system
C)
To measure fault currents
D)
To check transformer efficiency
Option B is correct: To design an effective and safe earthing/grounding system.
Departmental (other) • 2026 • Paper-II
In electrical instruments, what is typically the most efficient form of damping?
A)
Air damping
B)
Fluid friction
C)
Eddy currents
D)
Magnetic friction
Option C is correct: Eddy currents.
Departmental (other) • 2026 • Paper-II
What is the property of magnetic materials?
A)
resistivity
B)
conductivity
C)
permeability
D)
ductility
Option C is correct: permeability.
Departmental (other) • 2026 • Paper-II
Superposition theorem can be applied only to circuits having:
A)
resistive elements
B)
passive elements
C)
non-linear elements
D)
linear bilateral elements
Option D is correct: linear bilateral elements.
Departmental (other) • 2026 • Paper-II
The kilowatt-hour (kWh) is the standard unit for measuring:
A)
Power
B)
Energy
C)
Voltage
D)
Current
Option B is correct: Energy.
