The battery is an electrochemical device, which means battery
A. Makes chemicals by mechanical means
B. Uses chemical action to provide electricity
C. Has curved plates instead of flat plates
D. Does not use an electrolyte
Answer: Option B
A. Makes chemicals by mechanical means
B. Uses chemical action to provide electricity
C. Has curved plates instead of flat plates
D. Does not use an electrolyte
Answer: Option B
Engine is a device, which converts
A. Mechanical energy into heat energy
B. Heat energy into mechanical energy
C. Mechanical energy into sound energy
D. None of the above
Two-stroke engine is . . . . . . . . engine.
A. Water cooled
B. Air cooled
C. Oil cooled
D. None of these
Another name of diesel engine is
A. High volume combustion engine
B. Low volume combustion engine
C. Constant volume combustion engine
D. No volume combustion engine
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