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ER-2710 and 2720 block review
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Questions in this quiz (27)
1Which section of the CEC deals with installation of heating units
- ASection 12
- BSection 16
- CSection 46
- DSection 62
2A BTU is
- AHeat energy required to raise the temperature of a litre of water 1F
- BHeat energy required to raise the temperature of a pound of water 1F
- CHeat energy required to raise the temperature of a pound of water 1C
- DHeat energy required to raise the temperature of a litre of water 1C
3Heat transferred by electromagnetic wave motion by which we receive heat from the sun is through?
- AConduction
- BConvection
- CRadiation
- DHVAC units
4What is usually provided on the intake side of the fan in the return air system?
- ASupply plenum
- BPower supply filter
- CFilter
- DFlue or stack
5A schematic diagram is used to
- ADemonstrate how electrical circuits work
- BShow the relative physical location of components
- CTo wire a circuit
- DTo find a control device
6The function of the refrigeration cycle is to
- ARemoves heat from low temperature body and delivers it to a high temperature body
- BRemoves heat from a high temperature body and delivers it to a low temperature body
- CRejects energy to low temperature body
- DNone of the above
7Which section of the CEC covers rules relating to disconnect switches for furnaces?
- ASection 12
- BSection 16
- CSection 28
- DSection 62
8Which part of the HVAC system is responsible for compressing the Freon
- ACompressor
- BCondenser
- CEvaporator
- DTX valve
9This type of compressor is completely sealed inside a metal housing and is not serviceable
- AHermetic
- BReciprocating
- CScroll
- DSemi-hermetic
10What substance is used in a heat cycle to transfer heat from one area, and remove it to another
- ARefrigerant
- BNeon
- CVapor
- DXenon
11A conventional condenser unit requires a liquid refrigerant which is also called?
- AFreon
- BHydrogen
- CHelium
- DCarbon dioxide
12Which component pushes the hot gas to the finned condenser coil in the outdoor side of the air conditioner
- AControl valve
- BEvaporator thermal expansion valve
- CThe receiver
- DThe compressor
13Two different pressures exist in the refrigeration cycle. Two components that separate the high-pressure side from the low-pressure side are:
- ACompressor and TRX valve
- BEvaporator coil and TRX valve
- CCondenser coil and compressor
- DCompressor and receiver
14In the cooling mode, what component is located inside the building?
- AThe condenser coils
- BThe 4 way reversing valve
- CThe compressor
- DThe evaporator
15To go from cooling source in a heat pump, what is required?
- ATRX valve
- B4 way reversing valve
- CDouble pole thermostat
- DA disconnect switch
16The amount of heat added to the liquid to make it saturated and change states is called
- ASuper heat
- BHeat energy
- CLatent heat
- DTransferred heat
17Heat, that when added or removed, causes a change in temperature but not in state
- ALatent heat
- BSensible heat
- CLow heat
- DEnergy heat
18Refrigerant lines are usually made from
- AAluminum
- BStainless steel
- CCopper
- DEither a or c
19Which part of a cooling system absorbs heat from the air?
- ACondenser
- BEvaporator
- CCompressor
- DAccumulator
20Why is it necessary to have a heating element in a heat pump?
- ATo eliminate condenser freezing
- BTo protect against high outside temperature
- CTo protect against low outside temperature
- DTo provide heat for the room
21Which statement indicates an acceptable method of supplying power to a 65,000 BTU gas fired hot water furnace?
- ASupply furnace from basement lighting
- BSupply furnace from nearest receptacle
- CSupply furnace from smoke detector circuit
- DSupply from dedicated circuit
22What describes heat transfer from one metal to another in a heating system?
- AConduction
- BRadiation
- CConvection
- DEvaporator
23What type of evaporator coil is used in a heat pump?
- AFin tube
- BHelical tube
- CPlate tube
- DAir bay pass tube
24What does a shop drawing show?
- ACost of components
- BElevation of components
- CLogical operation of components
- DElectrical rating of components
25What if the minimum current rating for a disconnect serving a motor compressor?
- A100% of the rate load current
- B115% of the rated load current
- C125% of the RLC
- D140% of the RLC
26A high limit control in a gas furnace control is switched with a fan limit control. What is the result?
- AThe burner will not ignite
- BThe fan will cycle on and off
- CThe burner won’t turn off
- DThe fan won’t run
27Which calculation determines the size of the overload fuses for motor compressor appliances?
- A100% of the rated load current
- B115% of the rated load current
- C125% of the RLC
- D140% of the RLC
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- Quiz on ER-2710 and 2720 block review , created by Kaitlyn Hickey on 03/02/2018.
- Author
- Kaitlyn Hickey
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- English
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