These essential MCQ questions are selected from the most important topics in Railways RRB ALP (Assistant Loco Pilot) and Technician examinations 2026. Sections include Mathematics, Basic Science, General Intelligence, General Awareness and Technical Subjects as per the RRB ALP syllabus. For truely unlimited daily MCQ practice, visit Vooo AI Education.
🚂 RRB ALP Technical
1ALP in Railways stands for:
Answer: A — Assistant Loco Pilot
ALP (Assistant Loco Pilot) drives trains under the supervision of the Loco Pilot (LP). The RRB ALP examination also recruits Technicians. An ALP can be promoted to Loco Pilot after qualifying required tests and gaining experience. It is one of the most sought-after railway jobs.
ALP (Assistant Loco Pilot) drives trains under the supervision of the Loco Pilot (LP). The RRB ALP examination also recruits Technicians. An ALP can be promoted to Loco Pilot after qualifying required tests and gaining experience. It is one of the most sought-after railway jobs.
2Ohm's Law states V = IR. If V = 12V and R = 4Ω, then I =
Answer: B — 3A
Using Ohm's Law: I = V/R = 12/4 = 3 Amperes. Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points, provided temperature and physical conditions remain constant.
Using Ohm's Law: I = V/R = 12/4 = 3 Amperes. Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points, provided temperature and physical conditions remain constant.
3Which type of current is used in homes in India?
Answer: B — Alternating Current (AC)
Homes in India use Alternating Current (AC) at 230 volts and 50 Hz frequency. AC is used because it can be easily transformed to different voltages using transformers, making long-distance transmission efficient. DC is used in batteries and electronic devices.
Homes in India use Alternating Current (AC) at 230 volts and 50 Hz frequency. AC is used because it can be easily transformed to different voltages using transformers, making long-distance transmission efficient. DC is used in batteries and electronic devices.
4The unit of electrical power is:
Answer: D — Watt
The SI unit of electrical power is the Watt (W), named after James Watt. Power = Voltage × Current (P = VI). 1 Watt = 1 Joule per second. 1 kilowatt (kW) = 1000 W. Electricity bills are calculated in kilowatt-hours (kWh), also called units.
The SI unit of electrical power is the Watt (W), named after James Watt. Power = Voltage × Current (P = VI). 1 Watt = 1 Joule per second. 1 kilowatt (kW) = 1000 W. Electricity bills are calculated in kilowatt-hours (kWh), also called units.
5What does LCM stand for in mathematics?
Answer: A — Lowest Common Multiple
LCM stands for Lowest Common Multiple (also called Least Common Multiple). It is the smallest positive integer divisible by both numbers. For example, LCM of 4 and 6 is 12. LCM and HCF problems are standard in RRB ALP Mathematics sections.
LCM stands for Lowest Common Multiple (also called Least Common Multiple). It is the smallest positive integer divisible by both numbers. For example, LCM of 4 and 6 is 12. LCM and HCF problems are standard in RRB ALP Mathematics sections.
6Which material is a good conductor of electricity?
Answer: C — Copper
Copper is an excellent conductor of electricity due to its free electrons. It is widely used in electrical wiring, motors and transformers. Other good conductors include silver (best conductor), gold and aluminium. Rubber, glass and wood are insulators.
Copper is an excellent conductor of electricity due to its free electrons. It is widely used in electrical wiring, motors and transformers. Other good conductors include silver (best conductor), gold and aluminium. Rubber, glass and wood are insulators.
7Diesel engines work on which principle?
Answer: B — Diesel cycle
Diesel engines work on the Diesel cycle, where air is compressed to a high pressure causing it to heat up, then diesel fuel is injected and ignites spontaneously. Diesel engines have no spark plugs unlike petrol engines. They are more fuel-efficient and are used in locomotives.
Diesel engines work on the Diesel cycle, where air is compressed to a high pressure causing it to heat up, then diesel fuel is injected and ignites spontaneously. Diesel engines have no spark plugs unlike petrol engines. They are more fuel-efficient and are used in locomotives.
8The boiling point of water at high altitude is:
Answer: C — Lower than 100°C
At higher altitudes, atmospheric pressure is lower, so water boils at temperatures below 100°C. For example, at the top of Mount Everest, water boils at about 70°C. This is why cooking takes longer at high altitudes.
At higher altitudes, atmospheric pressure is lower, so water boils at temperatures below 100°C. For example, at the top of Mount Everest, water boils at about 70°C. This is why cooking takes longer at high altitudes.
9If a train travels 240 km in 4 hours, its speed is:
Answer: C — 60 km/h
Speed = Distance / Time = 240 / 4 = 60 km/h. Speed, distance and time problems are very common in RRB ALP Mathematics. Formula: Speed = Distance/Time, Distance = Speed × Time, Time = Distance/Speed.
Speed = Distance / Time = 240 / 4 = 60 km/h. Speed, distance and time problems are very common in RRB ALP Mathematics. Formula: Speed = Distance/Time, Distance = Speed × Time, Time = Distance/Speed.
10Which gas is filled in electric bulbs?
Answer: B — Nitrogen or Argon
Electric bulbs are filled with inert gases like nitrogen or argon to prevent the tungsten filament from burning out due to oxidation. The inert gas slows down the evaporation of the filament. CFL and LED bulbs have largely replaced traditional incandescent bulbs.
Electric bulbs are filled with inert gases like nitrogen or argon to prevent the tungsten filament from burning out due to oxidation. The inert gas slows down the evaporation of the filament. CFL and LED bulbs have largely replaced traditional incandescent bulbs.
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