How many degrees the crankshaft will rotate with both the intake and exhaust valves seated when the intake opens 20 deg. BTDC, the exhaust opens 55 deg. BBDC, intake closes 25 deg. ABDC, and exhaust closes 45 deg. ATDC. (TYPE NUMBERS ONLY, AND THE UNIT IS DEG. AND ANSWER IN WHOLE NUMBERS ONLY) * Your answer On a four-stroke cycle reciprocating engine, which strokes are both valves open? " Power Compression Intake Exhaust Ignition The primary concern in the firing order of the opposed engine is to keep the power impulses on adjacent cylinders as close as possible to obtain the most outstanding mechanical efficiency. TRUE OR FALSE? * Your answer A nine-cylinder engine with a bore of 5.5 inches and a stroke of 6 inches will have a total piston displacement of? (TYPE NUMBERS ONLY, AND THE UNIT IS CU. INCH AND ANSWER IN WHOLE NUMBERS ONLY) *

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IC engines

The term "engine" indicates a mechanical device/machine used to convert input energy to a specific mechanical output. The input energy may be in the form of chemical energy, thermal energy, or so on and mechanical output is in the form of mechanical energy (work done). Generally, the engines classify into two groups which are internal combustion type and external combustion type, and further, these two types can be classified into two types that are reciprocating and rotary engines.