Cycle Circus
Engine Avengers 🛠️
Fuel Fools ⛽
Mech My Day 😄
Hybrid Hustle ⚡
100

This cycle is known as the most efficient reversible cycle.

What is the Carnot Cycle?

100

The engine that runs on petrol is called this.

What is a Spark Ignition (SI) engine?

100

The “fuel-air” party starts in this engine part.

What is the combustion chamber?

100

A mechanical engineer’s favorite exercise machine (hint: involves pistons).

What is a treadmill with a crankshaft? 😆

100

A hybrid engine combines these two power sources.

What are IC engine and electric motor?

200

In the Carnot cycle, efficiency depends on these two temperature limits.

What are T₁ (hot) and T₂ (cold)?

200

The engine that runs on diesel is called this.

What is a Compression Ignition (CI) engine?

200

MPFI stands for this.

What is Multi Point Fuel Injection?

200

The 2-stroke engine’s favorite song lyric: “___ goes up, power goes down!”

What is Piston? 😂

200

The electric motor in a hybrid car gets power from this.

What is a battery?

300

If T₁ = 600 K and T₂ = 300 K, find Carnot efficiency.

50%

300

In a 4-stroke engine, the power stroke happens once every how many revolutions?

What is two revolutions?

300

CRDI technology is mainly used in which type of engine?

What is a diesel engine?

300

If Carnot efficiency were a student, what would it say about others?

“You’ll never reach my level!” 😎

300

Plug-in hybrids can do this special action to recharge.

What is charging from an external source?

400

This cycle powers your car’s petrol engine.

What is the Otto Cycle?

400

This stroke pushes out exhaust gases — also known as the engine’s “breathing out.”

What is the Exhaust Stroke?

400

The first car with a hybrid engine came from this company.

What is Toyota (Prius)?

400

What does a mechanical engineer call a romantic date?

A perfect cycle ❤️

400

This technology allows engines to stop at traffic signals to save fuel.

What is start-stop system?

500

This cycle has constant-pressure heat addition and is used in diesel engines.

What is the Diesel Cycle?

500

A 2-stroke engine completes a cycle in how many strokes?

Two strokes

500

The device that mixes air and fuel in older engines.

What is a carburetor?

500

Why did the diesel engine break up with petrol engine?

It needed more compression! 💪

500

This hybrid system is nicknamed “the green machine.”

What is a mild hybrid or eco-hybrid?

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