In an extension spring, active coils include:

A. all coils
B. all coils minus the two end coils
C. all coils minus one of the two end coils
D. only those coils engaged in action


Answer: A

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Which of the following types of transformers can be ventilated, air-cooled, or sealed?

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When nozzles problems are apparent, the nozzle should be removed using ____ and replaced.

A. a special nozzle wrench B. adjustable pliers C. a pipe wrench D. Both a and b.

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Air in the brake hydraulic system can cause all of these EXCEPT ________

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During an AC performance test, an R-134a air conditioning system has a measured center duct outlet temperature of 59 degrees F. A manifold gage set shows low side pressure ranges between 35-45 psi and the high side pressure ranges from 250-400psi. Shop Temperature is 72 degrees F. What is most likely the cause?

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