Energy, Work & Power
1. The solar panel that powers the pump has an efficiency of 18%.
Calculate the total energy input from the solar panel required to raise this water.
Ai এর মাধ্যমে
১০ লক্ষ+ প্রশ্ন ডাটাবেজ
প্র্যাকটিস এর মাধ্যমে নিজেকে তৈরি করে ফেলো
উত্তর দিবে তোমার বই থেকে ও তোমার মত করে।
সারা দেশের শিক্ষার্থীদের মধ্যে নিজের অবস্থান যাচাই
Fig. 2.1 shows a fork-lift truck lifting a box.
The electric motor that drives the lifting mechanism is powered by batteries.
Name the store that energy is usefully transferred from by the batteries.
This question has 4 part(s).
The statements describe processes in a coal-fired power station. They are not in the correct order.
A Energy is transferred to the thermal store of the water
B Coal burns releasing energy from its chemical store
C Energy is transferred electrically via the national grid
D A turbine turns coils in a magnetic field
E Steam turns a turbine
Use the letters A, B, C, D and E to complete the flow chart explaining how the power station works.
Suggest two advantages of using solar energy to power the water pump, compared to using a diesel generator.
