WorksheetsMES P1 2025 Assignment 2
Total questions: 48
Worksheet time: 1hrs 18mins
What is the primary function of an engine?
To transform energy from one form to another
To cool down the vehicle
To generate electricity
To store fuel
What type of engine has combustion occurring within the engine?
Steam Engine
External Combustion Engine
Internal Combustion Engine
Gas Turbine
Which of the following is NOT a classification criterion for IC engines?
Ignition systems
Color of the engine
Fuel supply systems
Number of strokes per cycle
What is the main difference between four-stroke and two-stroke engines?
Cooling system
Size of the engine
Type of fuel used
Number of revolutions of the crankshaft
What type of ignition system uses a spark plug?
Electric ignition
Compression ignition
Spark ignition
Dual ignition
Which fuel type is used in a bi-fuel engine?
Only diesel
Electricity
Only petrol
Gaseous and liquid fuels
What is the function of the piston in an IC engine?
To transfer power to the crankshaft
To cool the engine
To store fuel
To ignite the fuel
What is the purpose of the crankshaft?
To convert reciprocating motion into rotary motion
To regulate fuel supply
To control the engine temperature
To convert rotary motion into linear motion
What is the primary advantage of a radial engine?
High thermal efficiency
Compact design
High power output
Low weight
What type of cooling system uses coolant and radiators?
Air cooling
Water cooling
Oil cooling
Gas cooling
What is the main purpose of a fuel supply system in an IC engine?
To regulate exhaust
To mix air and fuel
To cool the engine
To ignite the fuel
What is the clearance volume in an engine?
Volume of the exhaust system
Volume of the crankcase
Volume of the fuel tank
Volume of the combustion chamber at TDC
What is the compression ratio in an engine?
Ratio of power output to fuel consumption
Ratio of engine speed to torque
Ratio of fuel to air
Ratio of total cylinder volume to clearance volume
What is the primary function of an electric motor in an electric vehicle?
To store energy
To convert electrical energy into mechanical motion
To charge the battery
To cool the vehicle
Which type of electric vehicle runs entirely on electric power?
Hybrid Electric Vehicle
Plug-in Hybrid Electric Vehicle
Battery Electric Vehicle
Internal Combustion Engine Vehicle
What is the role of the energy management system in an electric vehicle?
To charge the battery
To provide mechanical power
To regulate temperature
To monitor and control energy flow
What type of battery is commonly used in electric vehicles?
Alkaline batteries
Nickel cadmium batteries
Lead acid batteries
Zinc-carbon batteries
What is regenerative braking in electric vehicles?
Using a generator to produce electricity
Using the electric motor to recharge the battery while slowing down
Using fuel to power the vehicle
Using brakes to stop the vehicle
Which type of hybrid vehicle can be plugged into the power grid?
Internal Combustion Engine Vehicle
Plug-in Hybrid Electric Vehicle
Hybrid Electric Vehicle
Battery Electric Vehicle
What is the primary advantage of using electric vehicles?
Higher fuel costs
Lower emissions
More maintenance
Higher weight
What is the main function of the controller in an electric vehicle?
To provide mechanical power
To charge the battery
To cool the vehicle
To regulate energy flow to the motor
What is the primary fuel source for Hybrid Electric Vehicles?
Hydrogen
Electricity only
Solar energy
Gasoline or diesel
What is the main difference between series and parallel hybrid architectures?
Size of the battery
Weight of the vehicle
Type of fuel used
Power delivery method
A single cylinder engine has a brake drum diameter of 60 cm, rope diameter 3 cm, brake load 25 kg, spring balance 5 kg, and runs at 400 rpm. What is the brake power?
1.2 kW
2.6 kW
4.8 kW
1.0 kW
A four-stroke diesel engine (bore 25 cm, stroke 40 cm, 250 rpm) uses a brake load of 70 kg on a 2 m drum. What is the brake power?
5.4 kW
7.5 kW
17.98 kW
25 kW
An engine develops 20 kW brake power while consuming 5 kg/hour of fuel with a calorific value of 40000 kJ/kg. What is the brake thermal efficiency?
12%
18%
36%
72%
A 4-cylinder 4-stroke engine runs at 3000 rpm. If the swept volume per cylinder is 500 cc, what is the total engine capacity?
1000 cc
1500 cc
2000 cc
2500 cc
A diesel engine operates at an indicated thermal efficiency of 35%. If the indicated power is 40 kW and fuel consumption is 4.5 kg/hr (CV = 42000 kJ/kg), what is the calculated efficiency?
25.8%
31.4%
35.7%
76%
What is the brake power if net torque is 80 Nm and engine speed is 1500 rpm?
10.05 kW
12.56 kW
8.22 kW
7.54 kW
The brake specific fuel consumption (BSFC) of an engine is 250 g/kWh. How much fuel (kg/hour) is consumed at 10 kW brake power?
1.5
2.0
2.5
0.25
A petrol engine has a compression ratio of 8:1. What is the clearance volume if total cylinder volume is 600 cc?
75 cc
80 cc
100 cc
150 cc
A diesel engine has an indicated power of 60 kW and friction power of 15 kW. What is the mechanical efficiency?
15%
20%
65%
75%
The mean effective pressure (MEP) of an engine is 6 bar, displacement volume 2 liters, speed 1200 rpm, 1 power stroke per 2 revolutions. Find indicated power.
1.2 kW
2.4 kW
7.2 kW
4.2 kW
If a 4-stroke engine develops a brake power of 50 kW at 3000 rpm with brake mean effective pressure (BMEP) of 8 bar, what is the total swept volume?
0.998 liters
1.6 liters
2.5 liters
5 liters
What is the primary source of propulsion in an electric vehicle?
Gasoline
Diesel
Electric motor
Hydrogen fuel cell
Which component stores electrical energy in an electric vehicle?
Radiator
Battery pack
Carburetor
Exhaust pipe
Which type of battery is commonly used in modern electric vehicles due to its high energy density?
Nickel-Cadmium (NiCd)
Lead-Acid
Lithium-Ion (Li-ion)
Alkaline
What feature in electric vehicles converts kinetic energy during braking into electrical energy?
Turbocharger
Radiator fan
Regenerative braking
Solar panels
Which type of electric vehicle uses both an electric motor and an internal combustion engine?
Battery Electric Vehicle (BEV)
Plug-in Hybrid Electric Vehicle (PHEV)
Hybrid Electric Vehicle (HEV)
Fuel Cell Electric Vehicle (FCEV)
What is the driving range of an electric vehicle?
Top speed
Time to charge
Distance on a single charge
Vehicle weight
Which charging method is the slowest in electric vehicles?
Fast charging
Level 3 charging
Trickle charging
Level 2 charging
Which component controls the flow of electricity to the battery during EV charging?
Charging port
Charging cable
Onboard charging controller
Power inverter
Which type of hybrid vehicle can be charged from the power grid?
Hybrid Electric Vehicle (HEV)
Battery Electric Vehicle (BEV)
Plug-in Hybrid Electric Vehicle (PHEV)
Fuel Cell Electric Vehicle (FCEV)
What is the typical time to fully charge an electric vehicle using a Level 2 charging station?
5 minutes
30 minutes
2–8 hours
24 hours
A single-cylinder, four-stroke engine has: brake drum diameter 0.6 m, rope diameter 0.02 m, load 25 kg, spring balance 6 kg, speed 500 rpm, bore 10 cm, stroke 15 cm, indicated power 3.1 kW, and fuel consumed 1.8 kg/hr (CV 42000 kJ/kg).
Calculate brake power.
2.58 kW
3.03 kW
3.20 kW
3.50 kW
A single-cylinder, four-stroke engine has: brake drum diameter 0.6 m, rope diameter 0.02 m, load 25 kg, spring balance 6 kg, speed 500 rpm, bore 10 cm, stroke 15 cm, indicated power 3.1 kW, and fuel consumed 1.8 kg/hr (CV 42000 kJ/kg).
Calculate mechanical efficiency
92.2%
93.5%
95.7%
97.7%
A 6-cylinder, 4-stroke engine develops 100 kW brake power at 800 rpm. Stroke to bore ratio is 1.5, mean effective pressure is 8 bar, mechanical efficiency 80%. Calculate the bore diameter.
129 mm
135 mm
149 mm
155 mm
A four-stroke engine delivers 50 kW brake power at 3000 rpm. Fuel consumption is 9 kg/hr, CV 44,000 kJ/kg.
Calculate BSFC.
0.16 kg/kWh
0.18 kg/kWh
0.20 kg/kWh
0.23 kg/kWh
