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Engine Actuators Quiz

Authored by Jamie Smith

Other

12th Grade

Used 4+ times

Engine Actuators Quiz
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41 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of a petrol injector in an engine management system?

To ignite the air-fuel mixture

To atomize and inject fuel into the intake manifold or combustion chamber

To measure air intake

To regulate exhaust emissions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which type of waveform does an oscilloscope show for a petrol injector in operation?

Square wave

Pulse width modulation (PWM)

Sine wave

Steady voltage

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a common symptom of a failing petrol injector?

Misfire or rough idle

Increased oil pressure

High engine temperature

Improved fuel economy

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can you test the resistance of a petrol injector?

Use an oscilloscope

Use a multimeter to measure resistance across the injector terminals

Check for signal with a logic probe

Use a pressure gauge

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the best way to measure resistance across the injector terminals?

Use a logic probe

Use a multimeter

Check for signal with a logic probe

Use a pressure gauge

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What could cause an injector to deliver insufficient fuel?

Low engine temperature

Clogged injector nozzle

High fuel pressure

Short duty cycle

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key difference between diesel injectors and petrol injectors?

Diesel injectors require lower pressure

Diesel injectors operate at high pressure to inject directly into the combustion chamber

Diesel injectors use spark for ignition

Diesel injectors only work in two-stroke engines

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