Question

The diagrams show the four primary steps in the production of work in a four-stroke heat engine.

What is the correct order in which these steps occur?

Y, W, X, Z
X, Z, W, Y
W, X, Y, Z
Z, X, Y, W

Answer 1

ZXYW is the answer, suck, squeeze, blow, bang

Answer 2

Z, X, Y, W

Step-by-step explanation:

Four stroke engine has four steps in one cycle.

It is given by

1. Suction

2. Compression

3. Ignition & expansion

4. Exhaust

Here engine first absorb fuel and air mixture into the tank

Then this mixture is compressed to high pressure and then ignite by a spark at high pressure.

Due to ignition the air and gas mixture expands and thermal energy released which will convert into output work.

And in final step all the burnt gases are exhausted to outside