Chapter 93

Question 0

A function of a bourdon tube gauge hairspring is to:
A) return the tube to its zero position
B) keep the pointer on zero
C) eliminate backlash or play in the pointer
D) return the pointer to zero

Answer 0

C) eliminate backlash or play in the pointer

Question 1

An essential fitting between the boiler and the steam pressure gauge is a:
A) check valve
B) gate valve
C) gauge glass
D) siphon

Answer 1

D) siphon

Question 2

According to the ASME code section IV, steel or wrought iron pressure gauge connections are to be a minimum of \_\_\_\_ mm in pipe size.
A) 6.35
B) 21.3
C) 12.7
D) 19.05

Answer 2

B) 21.3

Question 3

An outside screw and yoke valve:
A) is always a gate valve
B) readily shows its operating position
C) is difficult to lubricate
D) requires no packing

Answer 3

B) readily shows its operating position

Question 4

A glove valve should be used in the feedwater line:
A) at all times
B) whenever it may be used for control purposes
C) if it is of the outside screw and yoke type
D) when the system is of a multi boiler installation

Answer 4

B) whenever it may be used for control purposes

Question 5

A steam boiler is blown down to:
A) discharge sediment and scale forming matter from the boiler
B) clean the soot and carbon out of the firebox and tubes
C) lower the operating water level in the boiler
D) test the rated relieving capacity of the safety valves fitted to the boiler

Answer 5

A) discharge sediment and scale forming matter from the boiler