Home
Class 12
PHYSICS
An engineer claims to have made an engin...

An engineer claims to have made an engine delivering 10 kW power with fuel consumption of 1 `gs^(-1)` . The calorific value of fuel is 2 kcal `g^(-1)`. This claim is

A

is valid

B

is invalid

C

depends on engine design

D

depends on the load

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

An engineer claims to have made an engine delivering 10 kW power with fuel consumption of 1gs^(-1) . The calorific value of fuel is 2 k cal / g . His claim

An engine consumes 20 kg of fuel per hour. The calorific value of the fuel is 12 Kcal g^(-1). Calculate the efficiency of the engine if the power of the engine is 42 kW.

In a nuclear reactor, the fuel is consumed at the rate of 1 mg//s . The power generated in kilowatt is.

An engine pumps water through a hose pipe. Water passes through the pipe and leaves it with a velocity of 2 ms^(1) . The mass per unit length of water in the pipe is 100 kgm^(-1) . What is the power of the engine? (a) 400 W (b) 200W (c) 100W (d) 800W

The power (P) of an engine lifting a mass of 100 kg up to a height of 10 m in 1 min is

Calorific value of H_2 is -143KJ g^(-1) . Hence, Delta H_(f)^(@) of H_2O is:

An engine of power 58.8 k W pulls a train of mass 2xx10^(5)kg with a velocity of 36 kmh^(-1) . The coefficient of kinetic friction is

Carbon monoxide emitted by automobiles is an environmental hazard . A car has an engine of four cylinders with a total cylinder volume of 1600 cc and a fuel consumption fo 7.0 dm^(3) per 100 Km , when driving at an average speed of 80 km/hr . In one second , each cylinder goes through 25 burn cycles and consumes 0.400g of fuel . The compression ratio, which is the ratio between the smallest and largest volume within the cylinder as the piston moves forward and backward is 1:8. Calculate the air intake of the engine (m^(3)S^(-1)) , if the gaseous fuel and air are introduced into the cylinder when its volume is largest until the pressure is 101.0 KPa. the temperature of both incoming air and fuel is 100^(@) C. (Assume the fuel to be isoctane , C_(8)H_(18))

An engine develops 20 kW of power. How much time will it take to lift a mass of 400 kg to a height of 40 m? (g=10 ms^(-2))

An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height of 40 m ( g=10(m)/(sec^2) ) ?