Free MASS Exam Questions MCQs | MASS - Power Plant Maintenance Selection System

Question # 56

You see an exploded diagram of a valve assembly with four parts: handle, stem, seal, and housing. Which sequence correctly assembles the parts?

Options:

Housing → Seal → Stem → Handle

Seal → Housing → Handle → Stem

Stem → Handle → Housing → Seal

Handle → Seal → Stem → Housing

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Question # 57

If voltage = 120 V and resistance = 30 Ω, what is the current?

Options:

2 A

3 A

4 A

5 A

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Question # 58

If resistance = 15 Ω and voltage = 90 V, what is the current?

Options:

4 A

5 A

6 A

7 A

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Question # 59

A maintenance instruction says: “Check oil pressure gauges before starting the engine. Do not operate if the pressure reading is below 20 psi.” What should the worker do if the gauge reads 15 psi?

Options:

Start the engine anyway.

Report the condition and do not start the engine.

Ignore the reading and continue work.

Add fuel instead of oil.

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Question # 60

A lever has a load arm 5 ft and an effort arm 15 ft. If the load is 900 lbs, how much effort is needed?

Options:

250 lbs

275 lbs

300 lbs

325 lbs

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Name	MASS - Power Plant Maintenance Selection System
Code	MASS
Vendor	Construction and Industry
Certification	Edison Electric Institute (EEI)