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Usps exam l Exam Questions and Verified Answers (Latest Update 2026) UPDATE!

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Usps exam l Exam Questions and Verified Answers (Latest Update 2026) UPDATE!

Institution
Oxford University (OX)
Course
USPS 943, 944/945

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Usps exam 943 944 945 l Exam
Questions and Verified Answers
(Latest Update 2026) UPDATE!
What is used for piston pin diameter -ANSWER - Micrometer

Amp - ANSWER - Electrical current

Ohm - ANSWER - unit of resistance

Volt - ANSWER - Unit of electric pressure

What tool measures amps -ANSWER - Ammeter

What tool measures ohms -ANSWER - Ohmmeter

What tool measures Volts - ANSWER - Voltmeter

What is measured in volts - ANSWER - Battery's

What is measured in amps - ANSWER - Current stored capacity of power source

What is measured in ohms -ANSWER - Resistance between two points

HC - ANSWER - hydrocarbons

Hc is caused by - ANSWER - Misfire

Nox - ANSWER - High exhaust temps caused by high combustion temp

Egr open - ANSWER - Lean

Egr closed -ANSWER - Rich

Rich - ANSWER - Black smoke

Lean - ANSWER - White smoke

Secondary spring - ANSWER - Goes on first

lower ball joint - ANSWER - Load bearing
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