What is a typical compression pressure achieved in a current highway truck diesel engine?

A. 150 psi
B. 350 psi
C. 600 psi
D. 1200 psi


Answer: C

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Given  S = 0.290W/t2.   If S = 2000, t = 0.55, solve for W rounded to 2 decimal places.

A. 45.68 B. 1050.33 C. 2086.21 D. 43.66

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All of the following statements about an air bag system are true EXCEPT:

A. Deployment is automatic B. It is a supplemental system C. It is mandated by the Federal government D. It is an active system

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Technician A says that wear indicator ball joints should be unloaded to check properly. Technician B says that wear indicator ball joints should be checked with the weight of the vehicle on the ground. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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In the operation of electrical circuits, which, in most cases, is an unwanted by-product?

A) light B) heat C) mechanical motion D) both B and C

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