GMJ 9189 Phase 3 Central heating MCQ

GMJ 9189 Phase 3 Central heating MCQ

Professional Development

20 Qs

quiz-placeholder

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GMJ 9189 Phase 3 Central heating MCQ

GMJ 9189 Phase 3 Central heating MCQ

Assessment

Quiz

Other

Professional Development

Hard

Created by

Glen Johnson

Used 46+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which British Standard covers the method for the calculation of design heating loads?

BS EN 12828:2003

BS EN 12831:2003

BS EN 14336:2004

BS EN 1264-1:1998

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the measurement of the U-value?

W/m²K

kJ/m²C

W/kg/K

J/m³K

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct formula to determine the heat loss from a space through air changes and ventilation?

m² x Δt x 1.33

m² x Δt x U-value

m³ x QTY x Δt0.33

m³ x U-value x QTY x 3

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the likely effects of oversizing a heating system?

Reduced energy usage, as systems produce enough heat quickly before shutting off for longer periods

Reduced life expectancy of heat emitters, which often overheat due to higher temperatures

Greater risk of burns/scalds, due to excess temperatures within the system and increased boiler combustion efficiency

Reduced energy efficiency, as boilers 'hunt', and greater initial outlay costs

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the most suitable external design temperature for a house with normal sheltered exposure in England and Wales?

-1°C

-3°C

-4°C

-5°C

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the correct formula to determine the heat loss through a surface such as a wall or window?

m² x Δt x 1.33

m² x Δt x U-value

m³ x QTY x Δt x 0.33

m³ x U-value x QTY x 3

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A radiator has a temperature of 70°C at the inlet and 50°C at the outlet. What is the MWT of the radiator?

20°C

40°C

50°C

60°C

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