Revision

Question 1

How dose a reciprocating compressor work?

Answer 1

Change in volume

Question 2

4 functions of air receiver?

Answer 2

Store
Smooth
Emergency supply
Cool

Question 3

4 types of valves ?

Answer 3

DVC
NRC
Pressure control
Flow control valve

Question 4

2 types of control valve?

Answer 4

Throttle

Restrictor

Question 5

What stops free falling of a load?

Answer 5

Exhaust air throttling

NVR pilot exhaust valve

Question 6

What pressure works the or valve?

Answer 6

Highest pressure

Question 7

What pressure works the and valve?

Answer 7

Lowest pressure

Question 8

Why don’t you put a pressure gauge in between actuator and DCV?

Answer 8

Because the fluctuations can cause damage to it

Question 9

What’s the fault of the inter cooler pressure relief valve is blowing off?

Answer 9

The Reed valve on second stage is broken, producing a back pressure

Question 10

How should you start the tactical light weight?

Answer 10

Lower cam leaver to disengage the engine from compressor

Question 11

How do Reed valves open and close?

Answer 11

Due to changing of pressure either side

Question 12

2 main advantages of a multistage compressor?

Answer 12

Efficient

Less heat generated (intercooler)

Question 13

What dose the sliding rotary vane compressor consist of? And what is the oil for?

Answer 13

Stator, rotor, vanes

Oil is for cooling the air, lubricating , and seal

Question 14

What 2 versions can the screw compressor be?

Answer 14

Dry or oil flooded

Question 15

How dose the dynamic compressor work?

Answer 15

Works due to mass acceleration

Question 16

What dose the needle valve control?

Answer 16

Deceleration

Question 17

What causes the oil to rise in the syphon tube?

Answer 17

Venturi

Question 18

What type of compressor would a crosshead be incorporated?

Answer 18

Double acting

Question 19

Pneumatic valves have a number of groups according to their function , what groups have 2 functions?

Answer 19

Pressure control valve