Related Questions

The safety valve on boiler drum compared to safety valve on superheater is set at
A Same value
B Higher value
C Lower value
D Lower/higher depending on steam flow
The safety valve at superheater as compared to drum safety valve setting is set at
A Higher value
B Lower value
C Same value
D Any value
Very high pressure boilers are usually __________ boilers.
A Fire tube
B Water tube
C Waste heat
D Natural circulation
A safety valve mainly used with locomotive and marine boilers is
A Lever safety valve
B Dead weight safety valve
C High steam and low water safety valve
D Spring loaded safety valve
For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is
A More
B Less
C Equal
D Either A or B; depends on the viscosity of the fluid
A contractor employed 30 men to do a piece of work in 38 days. After 25 days , he employed 5 men more and the work was finished one day earlier. How many days he would have been behind, if he had not employed additional men?
A 1
B 114
C 134
D 112
Feed check valve is used in steam boilers to
A Check the water level in the boiler
B Check the feed water flow rate
C Feed high pressure water to boiler and guard against its backflow through it
D None of these
The mixing vat in a factory receives liquid ingredients through six separate value--- labeled R.S.T.U,Y and Z -- each of which has exactly two settings: open and closed.The mixing vat operator must ensure that each valve is set open or closed according to the following conditions: If T is open, both S and Z must be closed, R and Z cannot both be closed at the same time; If Y is closed, Z must also be closed;S and U cannot both be open at the same time. Which of the following, if given to the mixing vat operator as an instruction, would not determine the setting of any other valve ?
A S must be open
B T must be open
C U must be open
Main gas valve in a gaseous fuel burner is a __________ valve.
A Gate
B Butterfly
C Globe
D None of these
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from
A 50° - 60°
B 60° - 70°
C 70° - 80°
D 80° - 90°

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