Specifications

151
Part - C
Answer the following questions briefly (4 Marks)
1. Define the following terminology used in electric fan. I) Blade sweep and ii) Service value
2. Brief the construction of electric motor used in fan.
3. How is the speed of the fan controlled? Draw the schematic diagram of a fan with resistance
type regulator.
4. What is exhaust fan? List its any four applications.
5. Explain briefly about the Oscillating mechanism of table fan.
6. State the two features of Nichrome wire has that make it a good producer of heat.
7. Brief the use of Safety cut-off switch in hair drier.
8. Brief the role protective screen and front grill in hair drier.
Part - D
Answer the following questions in one page level (10 Marks)
1. Explain briefly the following with respect to ceiling fan i) Canopy ii) Suspension rod and iii)
speed regulator.
2. Brief the various problems normally arise in electric fan and discuss their remedies.
3. Explain briefly the constructional details Bonnet type hair drier.
4. Discuss briefly the various safety features commonly emplyed in hair dryers.
5. Brief the various problems normally arise in electric hair drier and discuss their remedies.
6. Explain the construction of celing fan / Table fan with neat diagrams
7. Explain the working of celing fan / Table fan with neat diagrams