ISRO Scientist or Engineer Mechanical 2016
For the following questions answer them individually
A wire has a mass ($$0.3 \pm 0.003$$) g, radius ($$0.5 \pm 0.005$$) mm and length ($$6 \pm 0.06$$) cm. The maximum percentage error in the measurementof density is
Which ofthe following pressure gauge is generally used for the calibration of other pressure measuring gauges
In a ball bearing, if the number of balls is reduced to half and diameter of the ball is increased to 4 times, then static load capacity of the ball bearing is
Gaseous Nitrogen at $$30^\circ C$$ is expanded through a converging nozzle from a total pressure of 0.5 MPa to a back pressure chamber.If the back pressure is increased from 0.1 MPa to 0.4 MPa in steps of 0.02 MPa, the trend in massflow rate through the nozzle
Critical to Stagnation Pressure ratio $$\left(\frac{P^*}{P_0}\right)$$ for an expansion process is
A Pelton wheel turbine operates under a head of 125 m at a speed of 2000 rpm. To operate very close to the maximumefficiency, the mean diameter of the Pelton wheelis nearly
