Tag: examples of hydraulic press

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Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

In a typical hydraulic press, a force of 20 N is exerted on small piston of area 0.050 m2. What is force exerted by large piston on load if it has an area of 0.50 m2?

  1. 200N

  2. 100N

  3. 50N

  4. 10N
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Using   $\dfrac{F _1}{A _1} = \dfrac{F _2}{A _2}$

$\therefore$   $\dfrac{20}{0.05} = \dfrac{F _2}{0.5}$            $\implies F _2 = 200$  N

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

Principle of similitude forms the basis for:

  1. comparing two identical equipments

  2. designing models so that the result can be converted to prototypes

  3. hydraulic designs

  4. performing acceptance tests
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The principle of similitude is a supplement to the scientific method advocated by Lord Rayleigh that requires that any suggested scientific law be examined for its relationship to similar law.

This principle forms the basis for designing models so that the result can be converted to prototypes.
Hence, option B is correct.

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press
State True or False.
Hydraulic press is used in the extraction of oil from oil seeds.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydraulic press is used in extraction of oil from oil seeds by crushing.

The concept of the hydraulic press is based on Pascal's theory, which states that when pressure is applied on fluids in an enclosed system, the pressure throughout the system always remains constant. In simple words, a hydraulic press is a machine that makes use of the pressure exerted on the fluids to crush something.

Multiple choice physics pressure in fluids and atmospheric pressure hydraulic equipment applications of pascals law examples of hydraulic press

A hydraulic press contains 0.25 $m^3$ (250 L) of oil. Find the decrease in volume of the oil when it is subjected to a pressure increase $\Delta p \, = \, 1.6 \, \times \, 10^7$ ,Pa. The bulk modulus of the oil is $B \, = \, 5.0 \, \times \,10^9$ Pa.

  1. $-0.32 \%$
  2. $-1.32 \%$
  3. $-0.42 \%$
  4. $-1.42 \%$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The bulk modulus B is defined as B = -delta_p / (delta_V / V). Rearranging gives delta_V / V = -delta_p / B. Plugging in values: -(1.6 * 10^7) / (5.0 * 10^9) = -0.0032, which is -0.32%.