Tag: solar power plant

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Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

What is solar cooker?

  1. Device which uses energy of direct sunlight to cook food

  2. Device which uses energy of direct falling water to cook food

  3. Device which uses energy of direct wind to cook food

  4. Device which uses energy of direct thermal energy to cook food
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solar cooker is a device that uses energy from the Sun directly to cook food or warm fluids.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

How heat is generated in solar cooker to cook food?

  1. Light reflected from plane mirror concentrates solar energy inside solar cooker

  2. Light refracted from plane mirror concentrates solar energy inside solar cooker

  3. Light deflected from plane mirror concentrates solar energy inside solar cooker

  4. none
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Concave or plain mirror are used on the top cover of the cooker. Light get reflected from these mirrors, these mirrors concentrates the light onto a point or a region where the food is kept to be cooked.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

What is fixed at the top of solar cooker?

  1. Plane mirror or concave mirror

  2. Convex mirror

  3. bifocal mirror

  4. Cylindrical mirror
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Concave or plain mirror is used in the solar cooker in order to concentrate the sunlight at one spot.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

Which colour is the interior of solar cooker?

  1. White

  2. Black

  3. Purple

  4. Yellow
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Interior of the solar cooker is painted black inorder to absorb maximum of the Sun's light falling on the device.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

Which is NOT an advantage of solar cooker?

  1. It has no moving parts.

  2. It requires a lot of maintenance.

  3. It can be used in remote areas.

  4. It does not cause any pollution.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solar panel is a very useful device. Some of its major advantages are:

1. As it has no moving parts during operation, energy loss due to friction is absent.
2. It can be used in any region where there is sufficient sunlight.
3. It does not cause any pollution and produces no byproducts.

The disadvantage with solar cooker is that it requires a lot of maintenance. The mirrors and the glass need to be kept clean. The orientation of mirrors need to be changed at regular times in a day as sun changes its position.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

A solar water heater cannot be used to get hot water on:

  1. a sunny day.

  2. a cloudy day.

  3. hot day.

  4. windy day.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solar devices are dependent on the sunlight for the generation of electricity. For the solar device to work efficiently, sunlight with good intensity should be available. Sunlight is weak during cloudy and rainy days. 

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

Which of the following devices convert solar light to electricity?

  1. Wind mills

  2. Turbines

  3. Thermostat

  4. Solar Panels
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solar panels are used to convert light (from solar energy) into electricity.

Wind mills harness wind energy to generate electricity.
Turbines are used in dams, which help in utilizing the kinetic energy of water in rivers.
Thermostat is a device used for maintenance of constant temperature. It is not used for energy production.  

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

Which ones are uses of solar panels?

  1. used in satellites and mars probe

  2. used in traffic signals

  3. used in calculators and toys

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solar panels can be used in calculators and battery operated toys, in satellites and Mars probes to provide them with energy to function in outer space by using the Sun's rays, can be used in traffic signals etc.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity
State whether the given statement is True or False :
Solar panels can produce electricity throughout the year. 

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Solar panels are dependent on the sunlight for the generation of electricity. For the solar panels to work efficiently, sunlight with good intensity should be available to fall on the panels. Sunlight is weak during cloudy and rainy days. Hence, solar panels cannot produce energy throughout the year.

Multiple choice physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

What is estimation of solar constant?

  1. 1.4 kW per square meter

  2. 1.4 W per square meter

  3. 1.6 kW per square meter

  4. 1.4 kW per square centimeter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Solar constant is defined as the mean amount of the solar energy received by the Earth's atmosphere, per unit of the area, during the time when the Earth is at the mean distance from the Sun. Solar constant equals to 1388 watts per square meter.