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Engineering :: Heat Engines

311.  A jet engine has
A. Propeller in front B. Propeller on top
C. Propeller in back D. Two propellers
E. No propeller    
312.  In jet engine the compression ratio
A. Varies with altitude B. Varies with speed
C. Varies as square of speed D. Remains constant
E. None of the above    
313.  Motoring test on I.C. engines is conducted to measure
A. I.H.P. B. B.H.P.
C. Pumping horse power D. Friction horse power
E. None of the above    
314.  A mechanical indicator is used to determine
A. Indicated horse power B. Brake horse power
C. Friction horse power D. Pumping horse power
E. IHP - BHP    
315.  The instrument used for the measurement of area of p-v diagram is known as
A. Areameter B. Clinometer
C. Graphometer D. Planimeter
E. Digitometer    
316.  Pour point is the temperature at which oil
A. Will ignite B. Will give off vapours enough for ignition
C. Will start flowing D. Barely flows
E. Starts cracking    
317.  In a four stroke cycle the minimum temperature inside the engine cylinder occurs
A. At the beginning of suction stroke B. At the end of suction stroke
C. At the end of compression stroke D. At the beginning of exhaust stroke
E. At the end of exhaust stroke    
318.  Motor cycles generally have
A. Air cooled engines B. Evaporative cooling system
C. Ice cooled engines D. Natural cooling engines
E. Natural cooling engines    
319.  Leaking radiator tubes are generally
A. Replaced B. Welded
C. Brazed D. Soldered
E. Left unattended    
320.  In closed cooling system
A. Hot water is recirculated after cooling B. Constant fresh water for cooling is supplied
C. Air and water cooling is simultaneously used D. Water does not flow
E. Water surrounding the cylinder is allowed to evaporate    

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