question_answer

Which of the features of expansion valves in the following lists are correctly matched?

Expansion Device		Feature
1.	Capillary tube	:	Chocking
2.	Thermostatic Expansion valve	:	Constant temperature
3.	Automatic Expansion valve	:	Constant degree of superheat
4.	Float valve	:	Mass flow rate of refrigerant is proportional to load

Select the correct answer using the codes given below. Codes:

A) 1 and 2           

B) 1 and 3

C) 1 and 4            

D) 3 and 4