City & guilds nvq diploma in plumbing - apply scientific principles

Understand how to apply scientific principles within mechanical services engineering Level 2 NVQ Diploma in Plumbing and Domestic Heating

Which one of the following is the freezing point of water? ,[object Object],[object Object],[object Object],[object Object]

A change of state in water takes place at which of the following temperatures? ,[object Object],[object Object],[object Object],[object Object]

Water is at its maximum density at which one of the following temperatures? ,[object Object],[object Object],[object Object],[object Object]

What is the intensity of pressure acting on the inlet to the 15 mm tap shown in the following diagram? ,[object Object],[object Object],[object Object],[object Object]

Which one of the following pipes of equal length will create the greatest resistance to the flow of water? ,[object Object],[object Object],[object Object],[object Object]

Which one of the following will cause siphonage to occur from the upper container to the lower container in the following diagram? ,[object Object],[object Object],[object Object],[object Object]

Which one of the following types of device is used to take temperature measurements of pipe surfaces when commissioning a central heating system? ,[object Object],[object Object],[object Object],[object Object]

What is the amount of heat energy required to raise 200 litres of water from 10ºC to 60ºC, if the specific heat capacity of water is 4.2 kJ/kg/ºC? ,[object Object],[object Object],[object Object],[object Object]

Conduction occurs by ,[object Object],[object Object],[object Object],[object Object]

Which method of heat transfer is shown in the following diagram by water being heated in the boiler, circulating through pipe A to the cylinder and returning to the boiler for re-heating by pipe B ? ,[object Object],[object Object],[object Object],[object Object]

Which one of the following materials is the best conductor of heat? ,[object Object],[object Object],[object Object],[object Object]

Which one of the following values reflects a neutral pH? ,[object Object],[object Object],[object Object],[object Object]

Lime-scale in hot water is caused by ,[object Object],[object Object],[object Object],[object Object]

The rate of electrolytic corrosion of metallic materials in a plumbing system is affected by which one of the following? ,[object Object],[object Object],[object Object],[object Object]

The following diagram shows a type of metallic roof joint which incorporates a gap in the joint design. What is the purpose of the gap? ,[object Object],[object Object],[object Object],[object Object]

Which one of the following is a ferrous metal? ,[object Object],[object Object],[object Object],[object Object]

Which one of the following identifies the coating that forms on the surface of sheet lead and provides a protective coating? ,[object Object],[object Object],[object Object],[object Object]

By how much will a 10 metre length of gutter expand when heated from 15ºC to 30ºC, if the coefficient of linear expansion of plastic is 0.00018? ,[object Object],[object Object],[object Object],[object Object]

The SI unit for measuring electrical current is ,[object Object],[object Object],[object Object],[object Object]

What is the typical size of fuse that will be required for an 1100 watt portable appliance fed by a 240 volt supply? ,[object Object],[object Object],[object Object],[object Object]

City & guilds nvq diploma in plumbing - apply scientific principles

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