A force of 10 kN is required to move a workpiece. What is the needed working pressure, if the piston diameter is 100 mm?

This question was previously asked in
ESE Mechanical 2018 Official Paper
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  1. 1.55 MPa
  2. 1.46 MPa
  3. 1.27 MPa
  4. 1.12 MPa

Answer (Detailed Solution Below)

Option 3 : 1.27 MPa
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ST 1: UPSC ESE (IES) Civil - Building Materials
20 Qs. 40 Marks 24 Mins

Detailed Solution

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Concept:

Pressure (P) is defined as the force acting on unit area.

Area of the piston of diameter d is given by 

Pressure P =  = 

Calculation:

Given, F = 10 kN, D = 100 mm

∴ P = 1.27 MPa

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