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Engineering :: Heat Engines

431.  Which of the following acts as a step up transformer in the ignition circuit of a petrol engine?
A. Magneto B. Coil
C. Plug D. Distributor
E. Battery    
432.  The battery used in vespa scooter is
A. Lead acid type B. Nickel cadmium type
C. Nickel-iron type D. Dry-cell type
E. No battery is used in the scooters    
433.  Which part of a gas turbine is subjected to the highest temperature?
A. Regenerator B. Blades
C. Compressed air D. Intercooler
E. Compressor coupling    
434.  Which of the following is an important consideration in the design of turbine blades?
A. Creep B. Shape
C. Exhaust temperature D. Air-fuel ratio
E. None of the above    
435.  The temperature of the blades of a gas turbine may be closer to
A. 100?C B. 212?C
C. 350?C D. 600?C
E. 1200?C    
436.  White smoke from a diesel engine can be expected during
A. Start up or idling B. High speed operation
C. High load operation D. All of the above
E. None of the above    
437.  Which of the following automobile is relatively free from pollution problems:
A. Diesel engine powered B. Petrol engine powered
C. Gas turbine powered D. Wankel engine powered
E. Batterly powered    
438.  Which of the following constituent of air has the least proportion?
A. Helium B. Xenon
C. Neon D. Carbon monoxide
E. Argon    
439.  Which of the following particles will be smallest in size?
A. Smog B. Rain
C. Drizzle D. Mist
E. Fog    
440.  The emission of oxides of nitrogen in automobile exhaust will be least when the vehicle is
A. Idling B. Cruising at low speeds
C. Cruising at high speeds D. Accelerating
E. Decelerating    

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