Control Valves
Control Valves
1.A unidirectional valve that lets air into the reservoir of a mechanical device, however doesn’t let it out, is a
a)Check valve
b)Receiver valve
c)Control valve
d)Three means valve
Ans: a) Check valve
2. 5/2 means single coil valve has:
a)2 ports a pair of positions
b)5 ports a pair of positions
c)5 ports five positions
d)2 ports five positions
Ans: b) five ports a pair of positions
3.What is the perform of a flow management valve?
a.flow management valve changes the direction of oil flow
b.flow management valve will alter the speed of flow of hydraulic oil
c.both a and b
d.none of the higher than
ANSWER: b. flow management valve will alter the speed of flow of hydraulic oil
4.What will the numbers in 4/2 valve mean?
a. Four positions and 2 ways that
b.Four ways that and 2 position
c.none of the higher than
ANSWER: b. Four ways that and 2 positions
5.Which of the following circuits shows tandem bicycle connection?
a.
ANSWER: Option: d.
6.Check valve may also be known as
a.pressure reducing valve
b.pressure escape
c.directional management valve
d.none of the higher than
ANSWER: c. directional management valve
7.A pressure escape is...... operated.
a.direct operated
b.pilot operated
c.solenoid operated
d.all the higher than
ANSWER: d. all the higher than
8.Which of the following statements are correct for throttle valve?
1.Reverse flow of fluid is not potential
2.Input pressure of a throttle is quite output pressure
3.The mechanism speed will be minimized by a throttle
4.Correct FCV for hand-picked} application will be selected on the premise of pressure drop such that
a.1, 2 & 3
b.1, 3 & 4
c.2, 3 & 4
d.all the higher than
ANSWER: c. 2, 3 & 4
9.How is reverse flow created potential in pilot operated check valve?
a. Spring force lifts the ball & attributable to that reverse flow created potential.
b. Fluid pressure lifts the ball & attributable to that reverse flow created potential.
c. Both
d. None of the these
ANSWER: b. Fluid pressure lifts the ball thanks to that reverse flow is feasible
10.What is the distinction between Pressure escape & Pressure Reducing Valve?
a. Pressure reducing valve is connected between pump and tank line whereas pressure escape is connected in between Direction management Valve and branch circuit
b. Pressure relief valves are invariably ordinarily opened
c. Pressure reducing valve is connected in between Direction management Valve and branch circuit whereas pressure relief valve is connected between pump and tank
d. None of the these
ANSWER: c. Pressure reducing valve is connected in between Direction management Valve and branch circuit whereas pressure relief valve is connected between pump and tank
11.What is the perform of unloading escape & can it's used as an adjunct for accumulators?
a. Unloading escape is employed to begin the accumulator by a pump once accumulator pressure goes below the bottom set price & it will be used as an adjunct.
b. Unloading escape is employed to begin the accumulator by a pump once accumulator pressure goes below the bottom price however is won't be used as an adjunct
c. Unloading escape is employed to begin the accumulator by a pump once accumulator pressure goes higher than the bottom price however won't be used as an adjunct
d. Unloading escape is employed to begin the accumulator by a pump once accumulator pressure goes higher than the set price and it will be used as an adjunct
ANSWER: a. Unloading escape is employed to begin the accumulator by a pump once accumulator pressure goes below the bottom set price & it will be used as an adjunct.
12.Why is pilot operated check valve utilised in clamping operation?
a. to reduce leak in spool valve
b. to avoid decrease in pressure throughout clamping
c.both a and b
d.none of the higher than
ANSWER: c. each a and b
13.From the mentioned that isn't the strategy to actuate the Direction management Valve
a)Push Button
b)Solenoid Operated
c)Pilot Operated
d)Fixed Operated
Ans: d) mounted Operated
14.Tandem centre position is achieved during this form of Direction management Valve
a)4/2 Direction management Valve
b)4/3 Direction management Valve
c)3/2 Direction management Valve
d)5/2 Direction management Valve
Ans: b) 4/3 Direction management Valve
15. wherever Pressure paid FCV is used?
a) to scale back the flow per modification is pressure modification
b) to extend the flow per modification is pressure modification
c) to stay the flow constant regardless of modification in pressure
d) to regulate the pressure per flow
Ans: c) to stay the flow constant regardless of modification in pressure
