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The pressure ratio across a gas turbine (for air, specific heat at constant pressure c_p = 1040 J/kgK and ratio of specific heats γ=1.4) is 10. If the inlet temperature to the turbine is 1200 K and the isentropic efficiency is ...

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two cutting tools with tool life equations given below are being compared : tool 1 : VT^(0.1) = 150 tool 2: VT^(0.3) = 300 where V is cutting speed in m/minute and T is tool life in minutes. The breakeven cutting speed ...

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A mono atomic idea gas (  γ=1.67, molecular weight= 40) is compressed adiabatically from 0.1 MPa, 300 K to 0.2 MPa. The universal gas constant is 8.314 Kj/mol-K. The work of compression of the gas ( in Kj/kg) is (a) 29.7 (b) 19.9 (c) ...

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A motor driving a solid circular steel shaft transmits 40 KW of power at 500 rpm. If the diameter of the shaft is 40 mm, the maximum shear stress in the maximum shear stress in the shaft is _____ Mpa. ...

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A heat pump absorbs 10 KW of heat from outside environment at 250K while absorbing 15 KW of work. It delivers the heat to a room that must be kept warm at 300 K. The coefficient of performance (COP) of ...

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Water ( density = 1000 kg/m3)  at ambient temperature flows through a horizontal pipe of uniform cross section at the rate of 1 kg/s. If the pressure drop across the pipe is 100 kPa, the minimum power required to pump ...

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In the engineering stress strain curve for mild steel, the ultimate tensile strength refers to a) Yield stress  b) Proportional limit c) Maximum stress  d) Fracture stress ...

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