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Book 2 PanGlobal Assessment Test > Chapter 2 Steam Heating Equipment > Flashcards

Chapter 2 Steam Heating Equipment Flashcards

1
Q

1.Modern radiators are made of:

A. Cast iron

B. Aluminum

C. Light steel pressings welded together

D. Magnesium

E. Copper

A

C. Light steel pressings welded together

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2
Q
  1. In buildings covering large areas the resistance to flow of the condensate in the return piping is quite high and _____ pumps are often used to assist the condensate flow.

A. Positive displacement

B. Lobe

C. Centrifugal

D. Vacuum

E. Turbine

A

D. Vacuum

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3
Q
  1. The presence of air in a steam heating system is undesirable since it will:

A. Increase the steam flow

B. Decrease the condensate flow

C. Increase the heat transfer

D. Increase the condensate load

E. Block the free flow of steam

A

E. Block the free flow of steam

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4
Q
  1. A fin coil consists of one or more rows of parallel tubes fitted with fins to _____ exchange.

A. Decrease the rate of heat

B. Increase the rate of heat

C. Increase the temperature

D. Decrease the temperature

E. Increase the flow rate

A

B. Increase the rate of heat

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5
Q
  1. Some heat is also _____ from the warm convector cabinet surface.

A. Conducted

B. Ventilated

C. Humidified

D. Constructed

E. Radiated

A

E. Radiated

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6
Q
  1. A unit ventilator may also be called a:

A. Unicorn

B. Radiator

C. Univent

D. Convector

E. Fin coil

A

C. Univent

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7
Q
  1. Packless radiator valves have a _____ diaphragm that completely seals off the valve body to prevent steam from leaking out around the valve stem.

A. Copper

B. Steel

C. Lead

D. Bronze

E. Plastic

A

D. Bronze

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8
Q
  1. In a steam heating system the steam gives up its _____ within the radiators, convectors and coils.

A. Latent heat

B. High temperature

C. Sensible

D. Enthalpy

E. Entropy

A

A. Latent heat

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9
Q
  1. The presence of air in a steam heating system is undesirable since it will:

A. Decrease the condensate pressure

B. Promote corrosion in the system

C. Increase heat transfer beyond design

D. Increase the steam flow

E. Contaminate the makeup water

A

B. Promote corrosion in the system

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10
Q
  1. Older radiators were made of cast iron and built in sections which were connected by means of:

A. Clamps

B. Screw or push nipples

C. Tie rods

D. Bolts

E. Welded flanges

A

B. Screw or push nipples

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11
Q
  1. In modern installations the cast-iron radiator has largely been replaced by the:

A. Ventilator

B. Convector

C. Unit heater

D. Space heater

E. Hot air furnace

A

B. Convector

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12
Q
  1. Radiators may be classified as _____ type.

A. Wall-hung

B. Flooded

C. Airless

D. Horizontal

E. Vertical

A

A. Wall-hung

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13
Q
  1. '’Radiators’’ may be classified as _____ type.

A. Horizontal

B. Flooded

C. Vertical

D. Airless

E. Window

A

E. Window

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14
Q
  1. Radiators may be classified as _____ type.

A. Horizontal

B. Airless

C. Flooded

D. Floor

E. Vertical

A

D. Floor

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15
Q
  1. A unit heater is a convector heater that employs _____ to force the air across the heating coil.

A. A blower or fan

B. A pump

C. A turbocharger

D. Natural convection

E. Differential pressure

A

A. A blower or fan

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16
Q
  1. The type of trap commonly used with radiators or convectors is the _____ trap with either corrugated bellows or disc.

A. Thermodynamic

B. Thermostatic

C. Inverted bucket

D. Ball float

E. Impulse

A

B. Thermostatic

17
Q
  1. The presence of air in a steam heating system is undesirable since it will:

A. Decrease the condensate pressure

B. Promote corrosion in the system

C. Increase heat transfer beyond design

D. Increase the steam flow

E. Contaminate the makeup water

A

B. Promote corrosion in the system

18
Q
  1. In the convector air circulates naturally without the aid of a fan a process that is called:

A. Conduction

B. Ventilation

C. Humidification

D. Convection

E. Radiation

A
19
Q
  1. The radiator trap is a device that allows the condensate to be discharged from the radiator but prevents any _____ from discharging.

A. Steam

B. Air

C. Carbon dioxide

D. Non-condensable gases

E. Condensate

A

A. Steam

20
Q
  1. The presence of air in a steam heating system is undesirable since it will:

A. Reduce the heat transfer

B. Decrease the condensate flow

C. Cause the relief valve to fail

D. Increase the steam flow

E. Reduce the operating pressure

A

A. Reduce the heat transfer

Book 2 PanGlobal Assessment Test (40 decks)

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