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For the following questions answer them individually
For a glass plate, transitivity and reflectivity are specified as 0.86 and 0.08 respectively, the absorptivity of the glass plate is
A composite slab has two layers of different materials with thermal conductivities $$k_{1}$$ and $$k_{2}$$. If each layer has same thickness, then the equivalent thermal conductivity will be:
The ratio of heat flow $$\frac{Q_{1}}{Q_{2}}$$ from two walls of same thickness having their thermal conductivities as $$K_{1} = 2K_{2}$$ will be:
Two mating spur gears have 40 and 120 teeth respectively. The pinion transmits at 1200 rpm and transmits a torque of 20 N-m. The torque transmitted by gear is:
The expected life of a ball bearing subjected to a load of 9800 N and operating at 1000 RPM is 3000 hrs. What is the expected life of the same bearing for similar load of 4900 N and speed of 2000 RPM
A Gas engine has a swept volume of $$300 cm^{3}$$ and its volumetric efficiency is 0.88 and mechanical efficiency is 0.90. The volume of mixture taken in per stroke is
