Tag: pressure in fluids and atmospheric pressure

Quizzes (8) Questions (120)

Questions Related to pressure in fluids and atmospheric pressure

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

In the hydraulic braking system , the piston in the master cylinder is connected by mechanical linkage to the

  1. Wheel cylinders

  2. Brake shoes

  3. Brake pedal

  4. Wheel pedal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The piston in the master cylinder is connected by mechanical linkage to the Brake pedal in the hydraulic braking system.

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

In the integral type of power brake , the diaphragm acts directly on the hydraulic piston in the

  1. Master cylinder

  2. Wheel cylinder

  3. Adjacent cylinder

  4. Multiplier unit
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Since in integral type of power brake, the diaphgram acts directly on the hydraulic piston in the multiplier unit which leads to the increase in further pressure.

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

In the power assisted kind of brake the bellows applies force to master cylinder piston

  1. Through diaphragm linkage

  2. Directly

  3. Through mechanical linkage

  4. Through kinetic linkage
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the power assisted kind of brake the bellows applies force to master cylinder piston through mechanical linkage. A mechanical linkage is an assembly of bodies connected to manage forces and movement.

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

In the air brake, air pressure is supplied by

  1. Engine manifold

  2. A compressor

  3. The diaphragm valve

  4. pump
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An air compressor produces air for the brake system. Powered by the vehicle’s engine, the air compressor draws in air at normal pressure and forces it into a much smaller space, causing the pressure of the air to increase. This compressed air is a form of stored energy.

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

Two general types of vacuum assisted power brakes are

  1. Vacuum suspended and power suspended

  2. Integral and pressure suspended

  3. Atmospheric and vacuum suspended

  4. Power and pressure suspended
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Atmospheric power brakes and vaccum suspended power brake are two classifications of vaccum assisted power brakes.

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

If the system is not in free fall, which of the following statements is true about hydrostatic pressure?

  1. In a liquid, point at different depth can never be at the same pressure.

  2. In a liquid, point at different depth may be at the same pressure.

  3. In different liquids, points at different depths can be at the same pressure.

  4. In different liquids, points at the same depths can never be at the same pressure.
Reveal answer Fill a bubble to check yourself
A,C,D Correct answer
Explanation

pressure for same liquid is $\rho gh$

at same depth  pressure is same   as for specific liquid density is constant and depth is same 
 for different liquid 
pressure at different depth can be same as  $\rho h$ can be constant for different liquid 
but for different liquid pressure at same depth cannot be same as density is different and depth is same so pressure cannot be same

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

A hydraulic machine exerts a force of 900 N on a piston of diameter 1.80 cm. The output force is exerted on a piston of diameter 36 cm. What will be the output force?

  1. $12\times 10^4 N$
  2. $16\times 10^4 N$
  3. $36\times 10^4 N$
  4. $38\times 10^4 N$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$f=900 N$
$a=\pi \times (\frac {1.8}{2})^2=\pi \times \frac {(1.8)^2}{4}$
$A=\pi \times (\frac {36}{2})^2=\pi \times \frac {(36)^2}{4}$
Now $\frac {f}{a}=\frac {F}{A}$
$\Rightarrow \frac {900\times 4}{\pi (1.8)^2}=\frac {F\times 4}{\pi \times (36)^2}$
$\therefore F=\frac {900\times 4}{\pi \times 1.8\times 1.8}\times \frac {\pi \times 36\times 36}{4}$
$=36\times 10^4N$.