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Module 5 Quiz

Authored by ConCon Villarosa

Physics

9th Grade

Used 8+ times

Module 5 Quiz
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6 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

All engines operate at less than 100% efficiency because they ___________.

emit heat

conduct heat

absorb heat

burn gasoline

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

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What is the function of a heat engine?

It converts mechanical energy to

chemical energy.

It converts thermal energy to mechanical energy.

It converts thermal energy into chemical

energy.

It converts chemical energy to

mechanical energy.

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

Why is heat engine not 100% efficient?

All mixture of gases is converted into

work.

Some of the gases is taken up in the

piston.

Some of the gases is exhausted in the

surroundings.

All of the gases are used up by the

engine.

4.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

3. What is the correct sequence of four cycle-stroke of gasoline engine?

1. Intake 2. Exhaust 3. Power 4. Compression

1,2,3,4

1,4,3,2

2,3,4,1

1, 3,4,2

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

5. Which occurs just before ignition?

Power stroke

Compression stroke

Exhaust stroke

Intake stroke

6.

MULTIPLE CHOICE QUESTION

20 sec • 5 pts

Media Image

If heat added to the cycle is 40 kJ and the one rejected is 20 kJ,

then the efficiency of the cycle will be

40%

50% 

60%

100%

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