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IC Engine Practice Test: Measurements and Testing/Performance Parameters and Characteristics
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Measurements and Testing/Performance Parameters and Characteristics topics include: Measurment and testing, engine power and efficiencies, engine performance and characteristics.
Engine performance parameters are power, torque and specific fuel consumption. Brake torque is normally measured with a dynamometer – engine is mounted on a test bed and the shaft is connected to the dynamometer rotor.

Engine performance is often characterized by the engine operating behavior in the speed–load domain, for example, the behavior of emissions, fuel consumption, noise, mechanical and thermal loading.  

IC Engine Practice Test: Measurements and Testing/Performance Parameters and Characteristics
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25 Questions

1. The ratio of the brake power to the indicated power is called ______________
2. A 4-cylinder four stroke petrol engine develops 14.7 KW at 1000 r.p.m. The mean effective pressure is 5.5 bar. Calculate the bore and stroke of the engine, if the length of stroke is 1.5 times the bore.
3. The frictional power (F.P) is given by ____________
4. ____________ is the ability of a measuring device to retain its repeatability and other characteristics throughout its specified operating life and storage life.
5. Transmission dynamo meters are also known as ____________
6. With an increase of the number of cylinders in a multicylinder engine the power to weight ratio ______________
7. ____________ is the method of governing used in petrol engine.
8. The total power developed by combustion of fuel in the combustion chamber is called ____________
9. ____________ is a measure of the probability that a measuring device will continue to perform within specified limits of error over a specified length of time under specified conditions.
10. _____________ is also known as fuel rate extrapolation method.
11. What are the types of absorption dynamo meters?
12. If the speed of the engine is increased, the indicated power will ____________
13. The brake power of a diesel engine, keeping other parameters constant, can be increased by ______________
14. The indicated power for multi-cylinder engine will be same as that of a single cylinder engine.
15. ____________ is the basic requirement of a good combustion chamber.
16. The hypothetical pressure which is thought to be acting on the piston throughout the power stroke is called ____________
17. What are the basic measurement and testing parameters?
18. The ratio of the heat equivalent to one kW hour to the heat in fuel per B.P. hour is termed as brake thermal efficiency.
19. As compared to air standard cycle, in actual working, the effect of variation in specific heats is to ______________
20. Larger range of flow can be measured without pressure head being too ___________ in a viscous flow meter.
21. The internal losses in an engine are ____________
22. What are the basic measurement and testing parameters?
23. ____________ is the time required for the output of measuring device to reach a specified percentage of its final value as a result of a step change of measurand.
24. The ratio of the volume of charge admitted at N.T.P. to the swept volume of the piston is called ______________
25. Automobile gears are generally made of ______________

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