Review Questions for Grade 4 Refrigeration

Review Questions for Grade 4 Refrigeration

Vocational training

20 Qs

quiz-placeholder

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Review Questions for Grade 4 Refrigeration

Review Questions for Grade 4 Refrigeration

Assessment

Quiz

Construction

Vocational training

Easy

Created by

Quizizz Content

Used 3+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you test the high limit in a furnace during a maintenance?

Make a call for heat and stop the airflow.

Increase the airflow to maximum.

Check the thermostat settings.

Inspect the furnace for physical damage.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the best method to determine if a drain line heater for a freezer is operating properly?

Use an ammeter

Check the temperature of the freezer

Inspect the drain line visually

Listen for unusual noises from the heater

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where is a Snap Acting Device used?

It could be a two position or any on off switch

In complex multi-position control systems

For continuous variable control applications

As a safety interlock mechanism

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How could you repair a leak at the stem of a suction service valve on a refrigeration system?

Replace the entire valve assembly.

Tighten the packing gland and recheck for leaks.

Apply sealant around the valve stem.

Increase the pressure in the system.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Where to install a vibration isolator in a refrigeration system?

Parallel to the crankshaft

At the compressor outlet

Near the evaporator

Before the condenser

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a Primary consideration when installing a roof top unit

Roof Pitch

Temperature Control

Aesthetic Design

Cost of Installation

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How to test an OFC?

Use jumper 1 & 2 to keep the heater on.

Perform a visual inspection of the OFC.

Check the voltage levels with a multimeter.

Run a software diagnostic test.

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