Review Questions for Grade 4 Refrigeration

Review Questions for Grade 4 Refrigeration

Assessment

Flashcard

Construction

Vocational training

Medium

Created by

Stephen Nicoll

Used 1+ times

FREE Resource

Student preview

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47 questions

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1.

FLASHCARD QUESTION

Front

How to check a thermocouple?

Back

Open Circuit: about 25 to 30 mV

Closed Circuit: about 15 mV

Closed circuit means it is connected to a load

Remember: Closed circuit is about half of open circuit

2.

FLASHCARD QUESTION

Front

Calculate Net Stack Temperature

Back

Subtract the temperature of air entering the burner from the temperature inside the flue.

3.

FLASHCARD QUESTION

Front

How to check Waterside Pressure Drop in a condenser or chiller?

Back

Pressure drop is the difference from the inlet to the outlet.

Use a single gauge.

This makes sure the measurement is consistent with the same instrument

Alternatively, change the piping arrangement by using valves to be able to read with just one sensor.

4.

FLASHCARD QUESTION

Front

Total head lift with 65 PSI net pressure on a pump

Back

150 ft

5.

FLASHCARD QUESTION

Front

How to calculate the percentage of outside air using 3 temperature sensors.

Back

6.

FLASHCARD QUESTION

Front

How to test an OFC

Back

Use jumper 1 & 2 to keep the heater on.

or

Do a Dry Run Test

7.

FLASHCARD QUESTION

Front

How are floor tubes attached to the header in an ice rink.

Back

Use double gear clamps

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