WorksheetsTE-II ONE
Total questions: 15
Worksheet time: 11mins
Brake Power (BP) is measured in
Joules
Watts
Newtons
Pascal
Indicated Power (IP) is the power
Available at the crankshaft
Developed inside the cylinder
Lost due to friction
Required to overcome frictional losses
Friction Power (FP) is given by the formula
IP + BP
IP - BP
BP × IP
BP / IP
The unit of BSFC is
kg/hr
kg/kWh
kW/kg
kWh/kg
Air-Fuel Ratio (AFR) is defined as the ratio of
Mass of air to mass of fuel
Mass of fuel to mass of air
Volume of air to volume of fuel
Volume of fuel to volume of air
The relationship between BTE, ITE, and mechanical efficiency is given by
BTE = Mechanical Efficiency / ITE
BTE = ITE / Mechanical Efficiency
BTE = ITE × Mechanical Efficiency
BTE = ITE + Mechanical Efficiency
If FP is high, the mechanical efficiency of the engine will be
High
Remain unchanged
Low
Zero
The fuel consumption per unit power per hour is called
BSFC
ISFC
Both a & b
None of the above
ISFC is always ___than BSFC
Lesser
Zero
Equal
Greater
Calorific value of a fuel is defined as
The amount of heat required to raise the temperature of 1 kg of water by 1°C
The heat lost during combustion
The efficiency of fuel in an engine
The amount of heat produced by complete combustion of 1 kg of fuel
An IC engine is a device that converts
Electrical energy to mechanical energy
Mechanical energy to thermal energy
Thermal energy to mechanical energy
Chemical energy to electrical energy
Which parameter determines engine efficiency in converting fuel energy into useful work?
Indicated Power
Indicated Power
Brake Specific Fuel Consumption
Brake Thermal Efficiency
If Brake Power (BP) increases and Fuel Consumption remains constant, BSFC will
Decrease
Increase
Remain constant
Become zero
Which of the following fuels has the lowest calorific value?
Coal
Wood
Diesel
Kerosene
The function of a carburetor in a petrol engine is to
Compress the air-fuel mixture
Ignite the fuel
Mix air and fuel in the correct proportion
Increase engine speed
