Quiz 2 (BGN223/DBG213)

The rotating element in a centrifugal fan pump is commonly called the ___________.

• Impeller

• Rotor

• Volute

• Stator

The minimum size of any building sewer shall be determined on the basis of the _______.

• Type of building

• Number of bedrooms the building

• The material used for sewer piping

• Total number of fixture units and building drain size

The minimum sizes of vertical and horizontal drainage shall be determined from the ________.

• Location of fixtures

• Type of building

• Total bathrooms

• Total fixture units

Except for plastic pipe, instead of water test, drainage piping may be tested with _______.

• Gas

• Air

• Ether

• Smoke

Except in single-family residences, drainage stacks 3 stories or more in height serving _____ are considered suds-producing fixtures.

• Bathtubs

• Kitchen sinks

• Washing machine

• All of the above

The maximum distance between manholes shall not exceed _________.

• 90 m

• 100 m

• 150 m

• 200 m

The building sewer and water piping may be installed in the same trench (with the proper clearances) if the building sewer piping is ________.

• PVC

• Cast iron

• Extra strength vitrified clay

• All of the above

In a refrigeration system, the expansion device is connected between the _______________ and ________________.

• Compressor, condenser

• Condenser, receiver

• Evaporator, compressor

• Condenser, evaporator

The condition of refrigerant after passing through the condenser in a vapour compression system is ________.

• Wet vapour

• Saturated liquid

• Superheated vapour

• Dry saturated liquid

Freon group of refrigerants are __________.

• Toxic

• Inflammable

• Non-inflammable and toxic

• Nontoxic and non-inflammable