MES Departmental • 2026 • Paper-I
The Name of the instrument used for measuring resistance of insulator is:
A)
Meggar
B)
Multi meter
C)
Voltmeter
D)
Ammeter.
Option A is correct: Meggar.
MES Departmental • 2026 • Paper-I
Which one of the following work is not included in annual operation and maintenance of Deposited Works as per General condition for execution and maintenance of Deposit works?
A)
Annual painting
B)
Extension of lines
C)
Jungle cutting
D)
Topping up of Transformer oil.
Option B is correct: Extension of lines.
MES Departmental • 2026 • Paper-I
What is the interval of periodical inspection and testing to be carried out by the electrical Inspectorate or by the Department if the party/consumer carry out annual Operation and maintenance by himself?
A)
Annually
B)
Half yearly
C)
Not exceed five years
D)
Not exceed ten years
Option C is correct: Not exceed five years.
MES Departmental • 2026 • Paper-I
A contractor licensed under regulation 29 of the Central Electricity Authority (Measures relating to Safety and Electric Supply) Regulations, 2010.
A)
Distribution licensee
B)
Turnkey contractor
C)
DISCOM
D)
Licensed Electrical Contractor
Option D is correct: Licensed Electrical Contractor.
MES Departmental • 2026 • Paper-I
As described in The Electricity Act 2003, operation whereby the distribution system and associated facilities of a transmission licensee or distribution licensee, as the case may be, are used by another person for the conveyance of electricity on payment of charges to be determined under section 62 is called:
A)
Renting
B)
Outsource
C)
Wheeling
D)
Line utilization
Option C is correct: Wheeling.
MES Departmental • 2026 • Paper-I
Generating stations having Black Start Capability is called:
A)
Black start Station
B)
Starter
C)
Grid Starting point
D)
Power start station.
Option A is correct: Black start Station.
MES Departmental • 2026 • Paper-I
Which of the following is not demand control?
A)
Consumer Load Management initiated by Users.
B)
Consumer Load reduction by Disconnection initiated by Users
C)
Consumer Load reduction instructed by the Load Despatch Centre
D)
The scheduling of various types of transactions with the electric utilities over the interconnecting Transmission Lines
Option D is correct: The scheduling of various types of transactions with the electric utilities over the interconnecting Transmission Lines.
MES Departmental • 2026 • Paper-I
The response time for the consumer call as per Standard of performance for Distribution and Transmission licensee shall be:
A)
1 Minute
B)
2 Minutes
C)
3 Minutes
D)
5 Minutes
Option C is correct: 3 Minutes.
MES Departmental • 2026 • Paper-I
Which one of the following conductors is Steel Re-enforce?
A)
Panther Conductor
B)
Gnat Conductor
C)
Ant Conductor
D)
Grasshopper Conductor
Option A is correct: Panther Conductor.
MES Departmental • 2026 • Paper-I
The nominal period between two consecutive meter reading dates. It may be monthly or any other period as may be adopted by the Distribution Licensee as per the tariff order is called:
A)
Billing period
B)
Monthly bill
C)
Billing date
D)
Meter reading date
Option A is correct: Billing period.
MES Departmental • 2026 • Paper-I
The minimum operating safety distance for live line of 11kV/22kV/33kV as per safety manual issued by P&E Department is:
A)
Two feet
B)
Five feet
C)
Three Feet
D)
Four Feet
Option C is correct: Three Feet.
MES Departmental • 2026 • Paper-I
In a Guaranteed Standard, Power Restore time in the case of In case of overhead line/cable breakdowns in Class-I Cities is:
A)
One day
B)
36 Hours
C)
40 Hours
D)
10 hours
Option A is correct: One day.
MES Departmental • 2026 • Paper-I
JERC Supply Code declared that the area with population more than 1 lakhs city as defined in the latest Census of India is:
A)
Class -II City
B)
Class -I Town
C)
Class I City
D)
Class-II Town.
Option C is correct: Class I City.
MES Departmental • 2026 • Paper-I
What is the time limit for changing connection from single phase to three phase?
A)
Within two billing cycles from the payment of necessary charges
B)
Within one billing cycles from the payment of necessary charges
C)
Within three billing cycles from the payment of necessary charges
D)
Within one month from the payment of necessary charges.
Option B is correct: Within one billing cycles from the payment of necessary charges.
MES Departmental • 2026 • Paper-I
The security deposit by the consumer at the time of service connection is normally called:
A)
Load Security
B)
Connection fee
C)
Billing security
D)
Service charges
Option A is correct: Load Security.
MES Departmental • 2026 • Paper-I
The electricity drawn by a buyer in a time block, measured by the interface meters; as described in CEA (Deviation Settlement Mechanism and Related Matters) Regulations, 2014 is known as:
A)
Interface meter drawal
B)
Real drawal
C)
Block drawal
D)
Actual drawal
Option D is correct: Actual drawal.
MES Departmental • 2026 • Paper-I
What is the standard Planting Depth of Steel Tabular Pole SP 35 as per SOR 2025?
A)
2.0 meters
B)
1.5 Meters
C)
1.8 meters
D)
2.1 meters
Option B is correct: 1.5 Meters.
MES Departmental • 2026 • Engineering Paper-II
Before energizing a power transformer for the first time during commissioning, what does a “BDV test” evaluate?
A)
Bulk Density Verification of the transformer core steel
B)
Breakdown Voltage of the transformer insulating oil
C)
Balanced Direct Voltage of the control batteries
D)
Bushing Displacement Vector alignment
Option B is correct: Breakdown Voltage of the transformer insulating oil.
MES Departmental • 2026 • Engineering Paper-II
If you increase the distance ‘a’ between the four test pins in a Wenner test setup, what practical change occurs?
A)
You measure soil resistivity at a deeper layer of the earth.
B)
The measured test voltage increases dramatically.
C)
You measure only the dry top soil layer.
D)
The meter automatically runs out of scale range.
Option A is correct: You measure soil resistivity at a deeper layer of the earth..
MES Departmental • 2026 • Engineering Paper-II
If the load on the engine increases, how does the governor respond?
A)
It increases the speed of the flywheel
B)
It stores more kinetic energy
C)
It increases the supply of the working fluid (fuel)
D)
It decreases the supply of the working fluid (fuel)
Option C is correct: It increases the supply of the working fluid (fuel).
MES Departmental • 2026 • Engineering Paper-II
What is a major financial benefit of applying work study techniques in an organization?
A)
It increases overhead expenditures.
B)
It minimizes product costs by eliminating waste and inefficiencies.
C)
It leads to an immediate increase in raw material consumption.
D)
It eliminates the need to pay employee bonuses
Option B is correct: It minimizes product costs by eliminating waste and inefficiencies..
MES Departmental • 2026 • Engineering Paper-II
Why are fins generally made as thin as possible for heat transfer?
A)
To reduce the total weight
B)
To accommodate a larger number of fins in a given space
C)
To increase the width of the profile
D)
To increase structural strength
Option B is correct: To accommodate a larger number of fins in a given space.
MES Departmental • 2026 • Engineering Paper-II
Which type of fin profile in heat transfer system yields the maximum heat flow per unit weight?
A)
Straight rectangular fin
B)
Straight triangular fin
C)
Parabolic fin
D)
Pin fin
Option B is correct: Straight triangular fin.
MES Departmental • 2026 • Engineering Paper-II
Why is AC used instead of DC for measuring ground soil resistivity and earth resistance?
A)
AC travels faster in soil
B)
AC prevents soil electrolytic polarization and stray DC bias interference
C)
DC voltage cannot sink into deep earth
D)
AC instruments consume less battery power
Option B is correct: AC prevents soil electrolytic polarization and stray DC bias interference.
MES Departmental • 2026 • Engineering Paper-II
What critical maintenance activity prevents “contact welding” or local hotspots in outdoor isolator blades?
A)
Painting the contact surfaces with anti-corrosive zinc paint.
B)
Applying a thin layer of conductive, oxidation-inhibiting petroleum jelly or grease to the contacts.
C)
Increasing the spring tension until the blade cannot be moved manually.
D)
Washing the contacts thoroughly with high-pressure water while energized.
Option B is correct: Applying a thin layer of conductive, oxidation-inhibiting petroleum jelly or grease to the contacts..
