MES Departmental • 2026 • Paper-I
A State whose combined installed capacity of solar and wind generating stations under the control area of the State is 1000 MW or more is declared as:
A)
Renewable producer
B)
High Renewable State
C)
Renewable generator
D)
Renewable rich State
Option D is correct: Renewable rich State.
MES Departmental • 2026 • Paper-I
The electrical energy produced, flowing or supplied by an electric circuit during a time interval, being the integral with respect to time of the instantaneous power, measured in units of watt-hours or standard multiples thereof is called:
A)
Passive Energy
B)
Active Energy
C)
Reactive energy
D)
Apperent Energy
Option B is correct: Active Energy.
MES Departmental • 2026 • Paper-I
A point at which the consumer’s installation and/or apparatus are connected to distribution licensee’s distribution system.
A)
Pole connection
B)
Installation connection
C)
Point of contact
D)
Connected point
Option C is correct: Point of contact.
MES Departmental • 2026 • Paper-I
The Center who Control Load of Power within Mizoram is:
A)
SLDC
B)
PGCI
C)
NERLDC
D)
NLDC
The correct answer is SLDC (State Load Despatch Centre).
1. **SLDC (State Load Despatch Centre):** In the Indian power sector hierarchy, the SLDC is the apex body at the state level responsible for the real-time operation, monitoring, and control of the state's power grid. It ensures the balance between power generation and demand (load) within the state boundaries to maintain grid stability and frequency. For Mizoram, the SLDC manages the load flow within the state's network.
2. **NLDC (National Load Despatch Centre):** This is the highest level of control in India, managing the national grid and coordinating between different regions. It does not control the internal load of a specific state like Mizoram.
3. **NERLDC (North Eastern Regional Load Despatch Centre):** This center coordinates power flow and stability across the entire North Eastern region (including Mizoram, Manipur, Nagaland, etc.). While it oversees the region, the specific internal load control of Mizoram is delegated to the state's own SLDC.
4. **PGCI:** This is not a standard regulatory or control body for load despatch in the Indian power grid framework (likely a distractor option).
MES Departmental • 2026 • Paper-I
An Outage of State Generating Station (SGS) or any of Power Station Equipment, generally due to sudden failure of one or more parts of equipment at a generating station, of which no notice can be given by the Generator to STU and also include outage of transmission line and any substation equipment of which no notice can be given by STU is known as:
A)
Generator outage
B)
Main fail
C)
Forced outage
D)
Schedule outage
Option C is correct: Forced outage.
MES Departmental • 2026 • Paper-I
How many hours in advance notice should be given to the public, as per the Standards of Performance for Distribution and Transmission Licensees, for informing the public about scheduled outages other than load-shedding?
A)
12 Hours
B)
32 hours
C)
48 hours
D)
24 Hours
Option C is correct: 48 hours.
MES Departmental • 2026 • Paper-I
In an Overall Standard of performance, the time limit for replacement of damaged distribution transformers in urban areas is:
A)
10 Hours
B)
20 Hours
C)
18 Hours
D)
24 Hours
Option D is correct: 24 Hours.
MES Departmental • 2026 • Paper-I
The highest contracted load permissible as per JERC Supply code for Three Phase LT Domestic Consumer is:
A)
8 kW
B)
50 kW
C)
10 kW
D)
40 kW
Option A is correct: 8 kW.
MES Departmental • 2026 • Paper-I
The minimum required breakdown voltage value for Transformer Oil at 2.5mm gap for 33kV and below as per Operation and maintenance guidelines for lines & Sub-Station is:
A)
40 kV
B)
60 kV
C)
30 kV
D)
50 kV
Option A is correct: 40 kV.
MES Departmental • 2026 • Paper-I
The load in kW or kVA, which the licensee has agreed to supply from time to time subject to the governing terms and conditions in the absence of an Agreement between the Distribution licensee and the consumer is called:
A)
Approved Load
B)
Sanctioned Load
C)
Connected load
D)
Based Load
Option B is correct: Sanctioned Load.
MES Departmental • 2026 • Paper-I
The main function of Potential Transformer is:
A)
Reduce high voltage to measurable value
B)
Increase low voltage to measurable value
C)
Reduce high current to measurable value
D)
Increase low current to measurable value
Option A is correct: Reduce high voltage to measurable value.
MES Departmental • 2026 • Paper-I
In a Guaranteed Standard, the period of the Licensee shall inspect and check the correctness of the meter in urban Areas from the date of complain received from Consumer is:
A)
Within One week
B)
Within 4 working Days
C)
Within 7 working Day
D)
Within 15 working days
Option C is correct: Within 7 working Day.
MES Departmental • 2026 • Paper-I
What is the maximum angle of deviation of stringing of conductor to be limited for lattice Tower B type as per SOR 2025?
A)
20 degree
B)
60 degree
C)
30 degree
D)
90 degree
Option C is correct: 30 degree.
MES Departmental • 2026 • Paper-I
An amount chargeable for the billing cycle/billing period based upon contract/billing demand in kVA.
A)
Demand charge
B)
Energy Bill
C)
Billing charge
D)
Variable charge
Option A is correct: Demand charge.
MES Departmental • 2026 • Paper-I
The Works executed by P&E Department outside the normal budget/provision, the cost of which is borne by party/intending consumer, out of his own resource, which will benefit the specific consumer or party other than public in general is described as:
A)
Deposit Work
B)
Outside work
C)
Private Work
D)
Non-Governmental Work
Option A is correct: Deposit Work.
MES Departmental • 2026 • Paper-I
The registration of consumer call after the first response shall be completed within:
A)
7 minutes
B)
30 minutes
C)
10 Minutes
D)
45 minutes
Option C is correct: 10 Minutes.
MES Departmental • 2026 • Paper-I
The main purpose of Rubber Hand gloves during working at power line is:
A)
Safety for the worker
B)
Protection of Transformers
C)
Protection of equipment
D)
Diversion of surge current
Option A is correct: Safety for the worker.
MES Departmental • 2026 • Paper-I
A Standard GRID frequency all over India is:
A)
49 Hertz
B)
50 Hertz
C)
51 Hertz
D)
49.5 Hertz
Option B is correct: 50 Hertz.
MES Departmental • 2026 • Paper-I
A seller in case of a generating station based on other than wind or solar or hybrid of wind-solar resources as defined by Central Electricity Regulatory Commission (Deviation Settlement Mechanism and Related Matters) Regulations is:
A)
Electric Seller
B)
Hydro Seller
C)
General Seller
D)
Whole seller
Option C is correct: General Seller.
MES Departmental • 2026 • Paper-I
What is the normal validity period of estimate from the date of approval for making necessary payment to the Department as per General condition for execution and maintenance of Deposit works?
A)
6 months
B)
12 months
C)
3 months
D)
9 months
Option B is correct: 12 months.
MES Departmental • 2026 • Paper-I
The formula used for calculation of load factor is:
A)
Load Factor = Unit Consumed in a given period / (Maximum demand x No. of hour in a period)
B)
Load Factor = Load given to consumer / (Maximum demand x No. of hour in a period)
C)
Load Factor = Unit Consumed in a given period / (Contracted load of consumer x No. of hour in a period)
D)
Load Factor = Maximum load in a given period / (Maximum demand x No. of hour in a period)
Option A is correct: Load Factor = Unit Consumed in a given period / (Maximum demand x No. of hour in a period).
MES Departmental • 2026 • Paper-I
In an Overall Standard of performance, the percentage Licensee shall achieve the standards of performance in release of new connection is:
A)
93%
B)
99%
C)
95%
D)
90%
Option C is correct: 95%.
MES Departmental • 2026 • Paper-I
The purpose of CRC Spray in electrical terminal is:
A)
For cooling purpose
B)
Strengthening insulation resistance
C)
to prevent corrosion
D)
For lubrication
Option C is correct: to prevent corrosion.
MES Departmental • 2026 • Paper-I
The highest load measured in average kVA or kW at the point of supply of a consumer during any consecutive period of 30 (thirty) minutes during the billing period (or a specified billing period) as described by JERC Electricity Supply Code is known as:
A)
Contracted load
B)
High load
C)
Peak load
D)
Maximum demand
Option D is correct: Maximum demand.
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.
