Kaitlyn Hickey
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Quiz on ER-2710 and 2720 block review , created by Kaitlyn Hickey on 03/02/2018.

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Kaitlyn Hickey
Created by Kaitlyn Hickey about 6 years ago
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ER-2710 and 2720 block review

Question 1 of 27

1

Which section of the CEC deals with installation of heating units

Select one of the following:

  • Section 12

  • Section 16

  • Section 46

  • Section 62

Explanation

Question 2 of 27

1

A BTU is

Select one of the following:

  • Heat energy required to raise the temperature of a litre of water 1F

  • Heat energy required to raise the temperature of a pound of water 1F

  • Heat energy required to raise the temperature of a pound of water 1C

  • Heat energy required to raise the temperature of a litre of water 1C

Explanation

Question 3 of 27

1

Heat transferred by electromagnetic wave motion by which we receive heat from the sun is through?

Select one of the following:

  • Conduction

  • Convection

  • Radiation

  • HVAC units

Explanation

Question 4 of 27

1

What is usually provided on the intake side of the fan in the return air system?

Select one of the following:

  • Supply plenum

  • Power supply filter

  • Filter

  • Flue or stack

Explanation

Question 5 of 27

1

A schematic diagram is used to

Select one of the following:

  • Demonstrate how electrical circuits work

  • Show the relative physical location of components

  • To wire a circuit

  • To find a control device

Explanation

Question 6 of 27

1

The function of the refrigeration cycle is to

Select one of the following:

  • Removes heat from low temperature body and delivers it to a high temperature body

  • Removes heat from a high temperature body and delivers it to a low temperature body

  • Rejects energy to low temperature body

  • None of the above

Explanation

Question 7 of 27

1

Which section of the CEC covers rules relating to disconnect switches for furnaces?

Select one of the following:

  • Section 12

  • Section 16

  • Section 28

  • Section 62

Explanation

Question 8 of 27

1

Which part of the HVAC system is responsible for compressing the Freon

Select one of the following:

  • Compressor

  • Condenser

  • Evaporator

  • TX valve

Explanation

Question 9 of 27

1

This type of compressor is completely sealed inside a metal housing and is not serviceable

Select one of the following:

  • Hermetic

  • Reciprocating

  • Scroll

  • Semi-hermetic

Explanation

Question 10 of 27

1

What substance is used in a heat cycle to transfer heat from one area, and remove it to another

Select one of the following:

  • Refrigerant

  • Neon

  • Vapor

  • Xenon

Explanation

Question 11 of 27

1

A conventional condenser unit requires a liquid refrigerant which is also called?

Select one of the following:

  • Freon

  • Hydrogen

  • Helium

  • Carbon dioxide

Explanation

Question 12 of 27

1

Which component pushes the hot gas to the finned condenser coil in the outdoor side of the air conditioner

Select one of the following:

  • Control valve

  • Evaporator thermal expansion valve

  • The receiver

  • The compressor

Explanation

Question 13 of 27

1

Two different pressures exist in the refrigeration cycle. Two components that separate the high-pressure side from the low-pressure side are:

Select one of the following:

  • Compressor and TRX valve

  • Evaporator coil and TRX valve

  • Condenser coil and compressor

  • Compressor and receiver

Explanation

Question 14 of 27

1

In the cooling mode, what component is located inside the building?

Select one of the following:

  • The condenser coils

  • The 4 way reversing valve

  • The compressor

  • The evaporator

Explanation

Question 15 of 27

1

To go from cooling source in a heat pump, what is required?

Select one of the following:

  • TRX valve

  • 4 way reversing valve

  • Double pole thermostat

  • A disconnect switch

Explanation

Question 16 of 27

1

The amount of heat added to the liquid to make it saturated and change states is called

Select one of the following:

  • Super heat

  • Heat energy

  • Latent heat

  • Transferred heat

Explanation

Question 17 of 27

1

Heat, that when added or removed, causes a change in temperature but not in state

Select one of the following:

  • Latent heat

  • Sensible heat

  • Low heat

  • Energy heat

Explanation

Question 18 of 27

1

Refrigerant lines are usually made from

Select one of the following:

  • Aluminum

  • Stainless steel

  • Copper

  • Either a or c

Explanation

Question 19 of 27

1

Which part of a cooling system absorbs heat from the air?

Select one of the following:

  • Condenser

  • Evaporator

  • Compressor

  • Accumulator

Explanation

Question 20 of 27

1

Why is it necessary to have a heating element in a heat pump?

Select one of the following:

  • To eliminate condenser freezing

  • To protect against high outside temperature

  • To protect against low outside temperature

  • To provide heat for the room

Explanation

Question 21 of 27

1

Which statement indicates an acceptable method of supplying power to a 65,000 BTU gas fired hot water furnace?

Select one of the following:

  • Supply furnace from basement lighting

  • Supply furnace from nearest receptacle

  • Supply furnace from smoke detector circuit

  • Supply from dedicated circuit

Explanation

Question 22 of 27

1

What describes heat transfer from one metal to another in a heating system?

Select one of the following:

  • Conduction

  • Radiation

  • Convection

  • Evaporator

Explanation

Question 23 of 27

1

What type of evaporator coil is used in a heat pump?

Select one of the following:

  • Fin tube

  • Helical tube

  • Plate tube

  • Air bay pass tube

Explanation

Question 24 of 27

1

What does a shop drawing show?

Select one of the following:

  • Cost of components

  • Elevation of components

  • Logical operation of components

  • Electrical rating of components

Explanation

Question 25 of 27

1

What if the minimum current rating for a disconnect serving a motor compressor?

Select one of the following:

  • 100% of the rate load current

  • 115% of the rated load current

  • 125% of the RLC

  • 140% of the RLC

Explanation

Question 26 of 27

1

A high limit control in a gas furnace control is switched with a fan limit control. What is the result?

Select one of the following:

  • The burner will not ignite

  • The fan will cycle on and off

  • The burner won’t turn off

  • The fan won’t run

Explanation

Question 27 of 27

1

Which calculation determines the size of the overload fuses for motor compressor appliances?

Select one of the following:

  • 100% of the rated load current

  • 115% of the rated load current

  • 125% of the RLC

  • 140% of the RLC

Explanation

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