Fluid Power Actuators - 1 - MCQs with Answers

Fluid Power Actuators – 1 – MCQs with Answers

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

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2. What is the function of electric actuator?

a. converts electrical energy into mechanical torque
b. converts mechanical torque into electrical energy
c. converts mechanical energy into mechanical torque
d. none of the above

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3. Which of the following is a hydraulic cylinder based on construction?

a. single acting cylinder
b. double acting cylinder
c. welded design cylinder
d. all the above

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4. 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

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5. What is the advantage of using a single acting cylinder?

a. high cost and reliable
b. honing inside the inner surface of pump is not required
c. piston seals are not required
d. all the above

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6. Why are hydraulic cylinders cushioned?

a. cushioning decelerates the piston of a cylinder
b. stress and vibrations can be reduced
c. both a and b
d. none of the above

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7. Which of the following statements is true?

a. Tie-rod cylinders are used in applications having working pressure of 70 bar
b. Welded type cylinders are used in systems having working pressure more than 70 bar
c. Tie-rod cylinders can be used in systems having working pressure more than 70 bar
d. All the above

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8. Which of these actions does a hydraulic cylinder perform?

a. pushing
b. lifting
c. both a and b
d. none of the above

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9. Leakage in welded type of hydraulic cylinder is prevented by

a. wiper in gland cover
b. rod seal in end cover
c. rod seal in gland cover
d. both b and c

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10. In single acting hydraulic cylinders, the piston comes back to its original position due to

a. spring force
b. self-weight
c. momentum of a flywheel
d. all the above

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