BCME Unit II

Which of the following is a working principle of a simple boiler?

• a) Conversion of chemical energy into thermal energy

• b) Conversion of thermal energy into electrical energy

• c) Conversion of mechanical energy into thermal energy

• d) Conversion of thermal energy into mechanical energy

In a 2-stroke engine, how many strokes are required to complete one cycle?

• a) 1

• b) 2

• c) 3

• d) 4

Which type of engine uses a spark plug for ignition?

• a) 2-Stroke CI Engine

• b) 4-Stroke SI Engine

• c) 2-Stroke EC Engine

• d) 4-Stroke CI Engine

In a vapor compression refrigeration system, which component is responsible for changing the refrigerant from a liquid to a vapor?

• a) Condenser

• b) Evaporator

• c) Compressor

• d) Expansion valve

What is the primary function of the compressor in an air-conditioning system?

• a) To cool the refrigerant

• b) To pump the refrigerant

• c) To control the flow of refrigerant

• d) To remove heat from the system

Which component of an electric vehicle is responsible for storing electrical energy?

• a) Internal combustion engine

• b) Battery

• c) Alternator

• d) Radiator

What is the major difference between a hybrid vehicle and a conventional internal combustion engine vehicle?

• a) Hybrid vehicles use both electric motors and internal combustion engines for propulsion.

• b) Hybrid vehicles do not have an engine.

• c) Conventional vehicles are more fuel-efficient than hybrid vehicles.

• d) Hybrid vehicles do not require regular maintenance.

In a hybrid vehicle, what is the purpose of the electric motor?

• a) To provide power for acceleration

• b) To charge the battery

• c) To cool the engine

• d) To generate exhaust

Which of the following processes is categorized under sheet metal forming?

• A) Forging

• B) Extrusion

• C) Rolling

• D) Injection molding

In which forming process is a metal billet subjected to compressive forces to reshape it?

• A) Stamping

• B) Deep drawing

• C) Forging

• D) Spinning