Different Types of Valves multiple choice questions

 Different Types of Valves

1. In which of these treatment systems diaphragm valves are preferred?
a) Moving Bed Bioreactor(MBBR)
b) Desalination
c) Ultrafiltration
d) Demineralisation systems
Answer: Demineralisation systems
2. Which of these are usually not preferred for frequent operation?
a) Ball valve
b) Plug valve
c) Gate valve
d) Butterfly valve
Answer: Gate valve
3. Which of the following valves are used in high duty cycle applications?
a) Check valve
b) Clapper valve
c) Ceramic disc valve
d) Choke valve
Answer: Ceramic disc valve
4. Which valve can be used in the service to handle fluids and gases and at the same time can be used for throttling as well?
a) Butterfly valve
b) Gate valve
c) Plug valve
d) Diaphragm valve
Answer: Plug valve
5. In globe valves, the flow rate control is determined by _______
a) Size of the opening
b) Lift of the valve plug
c) Pressure difference
d) Gravity
Answer: Lift of the valve plug
6. Poppet valves are used in piston engines
a) True
b) False
Answer: True
7. Though a needle valve is similar to a gate valve in design and operation it can be used as a throttling valve.
a) True
b) False
Answer: True
8. Diaphragm valves are used to control flow by a movement of a diaphragm.
a) True
b) False
Answer: True
9. Which of these are used as throttling valves?
a) Butterfly valve
b) Check valve
c) Gate valve
d) Sluice valve
Answer: Butterfly valve
10. What is the other name for the plug valve?
a) Needle valve
b) Slim valve
c) Poppet valve
d) Spool valve
Answer: Slim valve
11. Of the below mentioned valves which of these are used to control the flow of liquid in a single direction?
a) Butterfly valve
b) Ball valve
c) Check valve
d) Plug valve
Answer: Check valve
12. Which of the following valves is better for on/ off control?
a) Ball valve
b) Butterfly valve
c) Plug valve
d) Knife valve
Answer: Ball valve
13. Which Material of construction is preferred when the valves are going to be fitted for a desalination plant?
a) SS316 L
b) SS304
c) Duplex
d) SS 316
Answer: Duplex
14. Which valve is used when a straight line of fluid and minimum restriction is required?
a) Gate valve
b) Lift check valve
c) Butterfly valve
d) Plug valve
Answer: Gate valve
15. What is the purpose of piston valve?
a) Regulate fluids
b) Regulate fluids carrying suspended solids
c) Regulates flow
d) Regulates pressure
Answer: Regulate fluids carrying suspended solids
16. Which valve is most commonly used in house hold applications?
a) Globe valve
b) Gate valve
c) Butterfly valve
d) Check valve
Answer: Globe valve
17. What is the function of a butterfly valve?
a) On/ off control
b) Flow regulation
c) Pressure control
d) Hydraulic control
Answer: Flow regulation
18. Which type of valve is preferred for vacuum applications?
a) Diaphragm valve
b) Butterfly valve
c) Globe valve
d) Sluice valve
Answer: Diaphragm valve
19. What is the purpose of pinch valve
a) Hydraulic control
b) Slurry flow regulation
c) Flow control
d) Regulate fluids
Answer: Slurry flow regulation
20. Check valve is also called as _________
a) Non-return valve
b) Gate valve
c) Knife valve
d) Choke valve
Answer: Non-return valve