Understanding R & AC Concepts

Dry ice is solid

• hydrogen

• Nitrogen

• Carbon di oxide

• Carbon monoxide

the instrument pyrometer used for

• Measuring high temperatures

• Measuring air pressure

• Measuring heat rate

• Measuring electric current

One ton of refrigeration equal to

• 21 KJ/min

• 210 KJ/min

• 420 KJ/min

• 620 KJ/min

What is human body temperature in ^oC

• 17

• 27

• 37

• 47

which branch of science deals with air

• Botany
• Psychrometry

• Geology
• Oceanography

which is the desirable physical property of refrigerant?

what is the abbreviation for split phase motor

what is measurement for tong tester used to take

A spring bender used for

Where is a Britannia joint used for