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WorksheetsFITTER 4 TH SEM TT MONTHLY EXAM JUNE 2021
Total questions: 25
Worksheet time: 13mins
Hydro motors also called ---------
linear actuaturs
cylinders
rotary actuators
rotary pumps
In gear type motor ,the torque depends on ---------
flow rate
pressure
viscocity
quantity
Hydro motors are provided -------- type motions
rotary motion
linear motion
angular motion
non of this
-------- type motor are the most volumetrically efficient motors
gear type
vane type
centrifugal type
piston type
Direction of hydro motor is controlled by ---------
check valve
direction control valve
pressure relief valve
shuttle valve
Direction of rotation of hydrometer depends on ---------
flow path of oil
pressure of oil
viscocity of oil
non of this
--------- are used to change ,open or close flow path in hydraulic system
direction control valve
pressure control valve
shuttle valve
check valve
In 4/3 valve have ----- no of position and -------- no of port
3 and 4
2 and 1
4 and 3
3 and 2
In --------- control valve have a mid- positon
4/2 valve
4/3 valve
3/2 valve
5/2 valve
Regeneration circuit is also called -------
one way circuit
two way circuit
by pass circuit
throttle circuit
---------- valve is used to vary the speed of an actuating cylinder or motor
direction control valve
pressure control valve
check valve
flow control valve
1. Piston speed =--------- / -----------
flow rate / piston area
piston area / flow rate
pressure rate / piston area
non of this
1. Which type of motion is transmitted by hydraulic actuators?
a. linear motion
b. rotary motion
c. both a and b
d. none of the above
3.Which energy is converted into mechanical energy by the hydraulic cylinders?
a. hydrostatic energy
b. hydrodynamic energy
c. electrical energy
d. none of the above
7.Which of the following is a hydraulic cylinder based on application?
a. welded
b. bolted
c. ram
d. all the above
11.Which type of hydraulic cylinder has one piston connected to piston rod extended on both the sides of the cylinder?
a. telescopic cylinder
b. tandem cylinder
c. both a and b
d. none of the above
17.What does the numbers in 4/2 valve mean?
a. 4 positions and 2 ways
b. 4 ways and 2 positions
c. none of the above
Hydraulic systems use ________ to transfer force from one point to another.
Air
Liquid
Solid
Gas
Where can you look on your car to see a good example of a basic piston-driven hydraulic system?
The power steering system
The instrument panel
The brake system
The radio system
Which one of the following is an example of a hydraulically operated machine?
A wheel barrow
A laptop computer
A bulldozer
A vacuum cleaner
What does Pascal's law state?
When you apply a small amount of pressure to a compressed fluid, it will send that pressure nowhere.
When you apply pressure to a confined fluid, the fluid will send that pressure out in all directions at the same rate.
When you apply a large amount of pressure to an object, it will float.
When you use a fluid to apply pressure, the pressure will release.
Which one is an example of a pneumatic system?
How are a hydraulic system and pneumatic system different?
One is more powerful than the other.
One uses a gas, and the other uses a liquid.
One has a pump, and the other does not.
One has more valves than the other.
It's important for a hydraulic system to contain what?
Air bubbles
No air bubbles
Compressible fluid
Compressible gas
Hydraulics is branch of science and engineering concerned with the use of liquids to perform___________
Electrical task
Magnetic task
Mechanical task
Electronic task
