Chapter 9 quiz

Positive fuel trim numbers indicate a lean condition

• True

• False

On an Ntc style temperature sensor, as temperature goes up

• resistance goes up

• resistance goes down

• voltage goes up

• amperage goes down

A ptc style thermistor, as temperature goes up

• resistance goes up

• resistance goes down

• resistance stays the same

• voltage does up

Pressure sensors can be used as a simple switch?

• True

• False

Barometric pressure is atmospheric pressure

• True

• False

What is optimum fuel ratio

• 15.7:1

• 13.0:1

• 14.7:1

• None of the above

Tech A says reference voltage should change with slight source voltage variance

Tech B says reference voltage should not change with slight source voltage variance

Who is correct?

• Tech A

• Tech B

• Both

• None

A wheatstone bridge device

is commonly used to measure changes in pressure or strain.

• True

• False

An oxygen sensor will cycle a voltage of

• 0.10 mv - 1 v

• .10 mv - 1 mv

• 10 v - 1 v

• 100 mv - 1 v

A potentiometer is used to monitor linear or rotary motion

• True

• False