MCQs- hydraulic machine

Hydraulic Device – MCQ Quiz

1. What is the part labelled 'X' in the hydraulic diagram?

A. Pump plunger B. Valve A C. Press plunger D. Lever

2. What is the part labelled 'Y' in the hydraulic diagram?

A. Press plunger B. Valve B C. Release valve D. Pump plunger

3. When the lever arm is moved down, what happens to valve A and valve B?

A. Valve A closes, valve B opens B. Valve A opens, valve B closes C. Both valves open D. Both valves close

4. Why does valve B close when the lever arm is moved down?

A. Due to increase in pressure in cylinder Q B. To allow flow from cylinder Q to P C. Due to increase in pressure in cylinder P D. Because valve A is faulty

5. What happens to the water when the lever arm is pushed down?

A. Water flows from Q to P B. Water flows from P to Q C. Water flows out into the tank D. Water remains in cylinder P

6. What happens when the release valve is opened?

A. Water flows from cylinder P to Q B. Pressure increases in cylinder Q C. Water flows out from cylinder Q to the reservoir D. Valve B closes

7. What happens to the press plunger (X) when the release valve is opened?

A. It rises B. It stays at the same position C. It moves down D. It breaks

8. What happens to valve B when the lever arm is moved up?

A. It opens upwards B. It remains closed C. It bursts D. It reverses

9. Why does valve B open when the lever is moved up?

A. Due to increase in pressure in P B. To allow water to flow from Q C. Due to decrease in pressure in P D. Because valve A is closed

10. What is one use of a hydraulic press?

A. To cool machines B. To lift liquids C. To press cotton bales and goods D. To measure pressure