MCQ Questions On Boiler - Safety Valves Or Pressure Relief Valve
1. The function of a safety valve is _____
a) to release the excess steam when the steam pressure exceeds the rated pressure
b) to extinguish fire when the temperature reaches impermissible value
c) to release the excess water
d) it cuts off the water supply when water level reaches its maximum limit
Ans.a
2. Which of the following is NOT a type of safety valve?
a) Dead weight safety valve
b) Lever safety valve
c) Spring loaded safety valve
d) High water and low steam safety valve
Ans. d
3. A Steam separator is a boiler mounting.
a) True
b) False
Ans. b
4. In water level indicator, the glass tube that indicated the water level is called _____
a) measurement tube
b) guard glass tube
c) gauge glass tube
d) level tube
Ans. c
5. Which of the following statements about high steam and low water safety valve is FALSE?
a) It can be used on portable boilers
b) Steam escapes out when water level falls below a certain level
c) Steam is released when its pressure exceeds a certain pressure
d) It is generally used in Lancashire and Cornish boiler
Ans. a
6. Spring loaded safety valve is suitable for locomotive and marine engines.
a) True
b) False
Ans. a
7. Which of the following statements about dead weight safety valve is FALSE?
a) It is unsuitable for Locomotive boilers
b) It is suitable for low pressure and low capacity boilers
c) To lift the valve the inside pressure must overcome the valve weight and the dead weights
d) It is suitable for high pressure boilers
Ans. d
8. Which of the following statements about safety valves is FALSE?
a) It is usually mounted on the top of the shell
b) It releases the steam if the steam pressure exceeds the rated pressure
c) Dead weight safety valve is a type of safety valve
d) An attendant is required to operate the valve
Ans. d
9. Which of the following statements regarding boiler mountings is TRUE?
a) They ensure safe operation of the boiler
b) They are installed to increase efficiency of the boiler
c) Economizer, superheater and feed pumps are boiler mountings
d) Water level indicator is not a boiler mounting
Ans. a
10. Water level indicator _____
a) indicates the amount of steam in the boiler
b) indicates the amount of water in the boiler
c) indicates the amount of water converted to steam
d) indicates the amount of steam left in the boiler
Ans. b
Comments
Post a Comment