Question
Explain how tidal energy can be used to generate electricity.
✓
Answer
During high tide, when the level of water in the sea is high, sea-water flows into the reservoir of the barrage and turns the turbines. The turbines then turn the generator to produce the electricity. And during the low tide, when the level of sea-water is low, the sea-water stored in the barrage reservoir is allowed to flow out into the sea. This flowing water also turns the turbines and generates electricity.Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A person got his eyes tested by an optician. The prescription for the spectacle lenses to be made reads:
Left eye: +2.50D, Right eye: +2.00D
Left eye: +2.50D, Right eye: +2.00D
- State whether these lenses are thicker in the middle or at the edges.
- Which lens bends the light rays more strongly?
- State whether these spectacle lenses will converge light rays or diverge light rays.
What is lymph? State two major functions of lymph.
What is a dam? Why do we seek to build large dams? While building large dams, which three main problems should particularly be addressed to maintain peace among local people? Mention them.
A student claims that because of atmospheric refraction, the sun can be seen after it has set, and the day is, therefore, longer than if the earth had no atmosphere.
- What does the student mean by saying that the sun can be seen after it has set?
- Do you think that the students conclusion is correct?
An organic compound ‘X’ on heating with cone. $\text{H}_{2}\text{SO}_{4}$ forms a compound ‘Y’ which on addition of one molecule of hydrogen in the presence of nickel forms a compound ‘Z’. One molecule of compound ‘Z’ on combustion forms two molecules $\text{CO}_{2}$ of and three molecules of $\text{H}_{2}\text{O.}$ Identify giving reasons the compounds ‘X’, ‘Y’ and ‘Z’. Write the chemical equations for all the chemical reactions involved.
→They are not correct. The father with blood group $A$ has genotype $\left.I^A\right|^0$. The mother with blood group $B$ has genotype $\left.I^B\right|^0$. Hence, the possible genotypes of the children will be $\left.\left.\right|^A\right|^B,\left.\left.\right|^A\right|^O,\left.I^B\right|^O$ and $\left.I^O\right|^{\circ}$. Thus, the possible blood groups of children will be $A B, A, B$ and $O$. Hence, if the father has blood group $A$, and the mother has blood group B, it is possible for them to have children with blood group O .
→What is implantation? Where does it take place? Mention the structure involved and its function.
What constitutes a female reproductive part in a flower?
What is meant by strong bases and weak bases? Classify the following into strong bases and weak bases:
$NH_4 OH, Ca(OH)_2, NaOH, KOH, Mg(OH)_2$
→$NH_4 OH, Ca(OH)_2, NaOH, KOH, Mg(OH)_2$
The atomic number of an element is $20.$ Write its electronic configuration. State whether this element is a metal or a non$-$metal. What is its valency? Write the name and formula of the compound which this element forms with chlorine.
→