Related Questions

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
The inherent characteristic of an equal percentage valve relating flow rate 'q' with valve stem movement 'x' are described by the equation
A $$\frac{{{\text{dq}}}}{{{\text{dx}}}} = {\text{K}}$$
B $$\frac{{{\text{dq}}}}{{{\text{dx}}}} = {\text{K}} \times {\text{q}}$$
C $$\frac{{{\text{dq}}}}{{{\text{dx}}}} = \frac{{\text{K}}}{{\text{q}}}$$
D $$\frac{{{\text{dq}}}}{{{\text{dx}}}} = {\text{K}} \times {{\text{q}}^2}$$
The valve used for very remote and accurate control of fluid is a __________ valve.
A Needle
B Globe
C Gate
D Butterfly
Main gas valve in a gaseous fuel burner is a __________ valve.
A Gate
B Butterfly
C Globe
D None of these
The displacement of the D-slide valve is __________ the steam lap by a distance known as lead of the valve.
A Greater than
B Less than
C Equal to
D None of these
Foot valve provided in the pump is a __________ valve.
A Direction control
B Back pressure
C Relief
D Pressure reduction
Remote control valve is a __________ valve.
A Gate
B Butterfly
C Needle
D Globe
The feed check valve is used in order to
A Regulate flow of boiler water
B Check level of water in boiler drum
C Recirculate unwanted feed water
D Allow high pressure feed water to flow to drum and not allow reverse flow to take place
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

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