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Farm Machinery Practice Test: Ignition and Power Transmission
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Avg score: 61% Most missed: “Octane number is associated to ____________”
Ignition and Power Transmission topics include: IC engine ignition system, power transmission system, battery ignition system working principle, fuel supply system and its components, fuel quality, volatility, ignition quality and detonation. Here are some basics about ignition and power transmission: Ignition: The ignition system produces high voltage, which is applied between the electrodes. This breaks down the insulation between the electrodes, which causes a current to flow. This creates an electrical spark, which activates fuel particles between the electrodes. The spark also triggers... Show more
Farm Machinery Practice Test: Ignition and Power Transmission
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25 Questions

1. A V-belt operates at 23.56 m/s peripheral speed. The mass of the belt per unit length is 0.9 kg/m. The value of centrifugal tension is _______
2. Air cell chamber is the ___________
3. Which of the following has highest vaporizing temperature?
4. Detonation refers to ____________
5. In engine, the choke controls ___________
6. The function of carburettor is to ___________
7. Turbo charger is a ___________
8. Two pulleys are connected by a belt. The sum of the diameter of two pulleys is 90 cm and while one makes 50 rpm, the other makes 20 rpm. What will be the diameters of the other pulley?
9. The formula of API degree is _______
10. Preignition can be caused due to presence of ______
11. A counter shaft of engineering workshop is being driven by electric motor with the help of canvas belt and pulley arrangement such that the speed of belt is 600 m/min and it transmits 50 KW. What will be the difference between tensions on either side of the belt?
12. Which device is used to generate an electric current for producing spark in I.C. engine?
13. Down draft carburettor are mostly used ___________
14. Which device is used for interrupting the low voltage primary current in the battery ignition?
15. Diesel fuel are rated by ____________
16. Vapor lock is associated to the ____________
17. In diesel engine, the fuel is burnt ___________
18. In engines, the function of choke, is to ___________
19. In carburettor of large tractor engines the type of jet used is ___________
20. Electrolyte used in storage battery consists of _________
21. In IC engine, the throttle controls ___________
22. What is the width of belt to transmit 15 HP to a pulley 35 cm in diameter. Pulley makes 1600 rev/min, coefficient of friction between belt is 0.22 and angle of contact is 20°. Maximum tension in belt not to exceed 8 kg per cm width.
23. A leather belt 100 mm wide and 10 mm thick with a safe permissible stress of 1.5 MPa is used for transmitting a maximum power of 15 KW. If the density of belt material is 1 g/cm3, the velocity of belt for maximum power transmission will be ________
24. The function of sediment bowl in fuel supply system is ___________
25. What are the types of spark plug?