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WorksheetsIC Engines
Total questions: 15
Worksheet time: 8mins
What is the compression ratio range for Diesel engines?
6:1 to 10:1
16:1 to 20:1
25:1 to 50:1
1:1
Why does a 100cc bike have better mileage than a 350cc bike?
Higher friction
Lower displacement and friction
Heavier weight
More wheels
Scavenging is the process of:
Injecting fuel
Removing exhaust gases
Lubricating gears
Spark ignition
Why is it hard to start a bike in winter?
Fuel vaporizes easily
Battery chemistry speeds up
Fuel doesn't vaporize + Battery slows down
Tires are cold
Valve overlap means:
Only Intake valve is open
Only Exhaust valve is open
Both valves are open briefly
Both valves are closed
White exhaust smoke indicates:
Perfect combustion
Burning oil / Worn piston rings
Rich mixture
Clogged filter
Octane Number relates to:
Diesel ignition quality
Petrol knock resistance
Oil viscosity
Brake fluid
Why does a Royal Enfield have a "thump"?
Short stroke engine
Long stroke engine + Heavy flywheel
No silencer
Small flywheel
Stoichiometric Air-Fuel ratio for petrol is:
12:1
14.7:1
20:1
10:1
"150cc" refers to:
Total swept volume
Clearance volume
Fuel tank size
Oil capacity
SI engines use:
Spark Plugs
Fuel Injectors only
Glow Plugs
Carburetors only
Burning oil in the engine is caused by:
New spark plugs
Worn piston rings
Clean filter
High octane fuel
CI stands for:
Common Ignition
Compression Ignition
Cold Ignition
Car Ignition
A heavy flywheel provides:
Higher speed
Momentum storage
Lighter weight
Quick acceleration
A Turbocharger is driven by:
Belt
Exhaust gas
Electric motor
Gears
