Types of Lamps

Q. Nichrome is not used to make the filament of an electric bulb. Why?

Q.

Why should we use fluorescent tubes in place of filament bulbs?

Q.

Explain the construction of an electric stove.

Q.

Why is it dangerous to replace a fuse wire with a copper wire?

Q. Why are compact fluorescent lamps (CFLs) preferred over incandescent electric bulbs?

Q. Which of the following is true about the filament of an electric bulb?

1. The hot filament appears to glow
2. The filament is made up of a material with high melting point.
3. Most of the heat is generated in the filament
4. The filament is made up of a material with low melting point.

Q. Why CFL is considered better than filament based electric bulbs?

Q. Statement 1: Incandescent bulbs consumes less energy than CFLs.
Statement 2: Electric bulb produces both light as well as heat.

1. Statement 1 is correct and statement 2 is incorrect.
   
2. Statement 1 is incorrect and statement 2 is correct.
   
3. Both the statements are correct.
   
4. Both the statements are incorrect.
   

Q. Name the instrument that automatically stops the current in a circuit if the current in it exceeds the specified limit.

1. Positive terminal
2. Electric fan
3. None of the above
4. MCB

Q. Why are compact fluorescent lamps (CFLs) preferred over incandescent electric bulbs?

Q. What are CFLs? Why are CFLs prefferred over electric bulbs?

Q. The thin wire that emits light inside a bulb when is passed through it is known as a .

1. light
2. conductor
3. filament
4. current

Q. Which of the following is true about the filament of an electric bulb?

1. Most of the heat is generated in the filament
2. The hot filament appears to glow
3. The filament is made up of a material with high melting point.
4. The filament is made up of a material with low melting point.

Q. Explain why, filament-type electric bulbs are not power efficient.Name any two types of electric lighting devices which are must much more energy efficient than filament-type bulbs.

Q. Which of the following devices consumes least electrical energy for the same light intensity?

1. Compact fluorescent lamps (CFLs)
2. Fluorescent tube-lights
3. Incandescent electric bulbs
4. Light emitting diode (LED) bulbs

Q. An incandescent bulblamp wastes large amount of energy as heat. How to minimize it?

Q. When a torch bulb glows, how does the energy conversions occur?

1. Electrical Energy
2. Chemical Energy
3. Light Energy
4. Heat Energy

Q. Filaments are present in bulbs.

1. incandescent
2. CFL
3. LED
4. all types of

Q. A fuse works on the principle of _______ effect of electric current.

1. sound
2. relative
3. heating
4. magnetic

Q. Which of the following is used as a safety device?

1. Battery
2. Fuse
3. Filament
4. Wire

Q.

Pl. give me some information on topic electricity-bulbs, its importance, gadgets, types of bulbs, sources of energy and any experiment on bulbs.

Q. Which of the following devices consumes least electrical energy for the same light intensity?

1. Compact fluorescent lamps (CFLs)
2. Incandescent electric bulbs
3. Light emitting diode (LED) bulbs
4. Fluorescent tube-lights

Q. Give reason why an electron emitter is generally made up of tungsten coated with cesium oxide.

Q. When a bulb lights up on passing current, the change of energy is:​

1. from electrical energy to heat and light energy​
2. from electrical energy to mechanical energy​
3. from electrical energy to heat energy​
4. from electrical energy to light energy​