Types of Solar Cell, Efficiencies and Ratings Rating of solar cell : Each solar cell generates 0.5 to 1 volt D.C supply. Current density is between 20 to 40 A / mm² I.e. 0.8 Amp. Types of solar cells and their efficiencies : Monocrystalline solar cells (10 to 17%), Polycrystalline solar cells (10 to 13%), … Read more

Properties and Functions of Moderator in Nuclear Reactor Properties of Good Moderator : The moderator must not absorb neutrons itself. This means it should have a relatively low neutron absorption cross-section. The moderator should efficiently slow down the neutrons. It should be in pure form. It should be thermally stable. It should have good heat … Read more

Comparison of Various Types of Power Stations Q. Comparison of Various Power Plants Q. What are the different types of power stations? Q. What is the difference between the steam power station and nuclear power station? Q. The Different Types of Power Plants Sr. No Particulars Thermal Power Station Nuclear Power Station Hydro Power Station Diesel Power Station … Read more

Electrical Power Plant Teams and Definitions Q. What is maximum demand in electrical? Q. What is load factor in power plant? Maximum Demand : The maximum demand of the power station is equal to maximum load on the station considered in a given period of time,  the load curve is drawn on taking average load … Read more

Distinguish Between Base Load and peak Load Q. Difference between base load and peak load Q. What is base load and peak load in power plant? Q. What is the peak load? Q. What are peak load plants? Q. Base Load and Peak Load Q. Difference between Base Load and Peak Load Power Plants Base Load Peak Load (I) Base … Read more

Definition and Diagram of Solar Constant Q. Define solar constant. Draw the schematic representation of distribution of solar energy as direct, diffused and total radiation Definition of solar constant : The rate at which the sun’s energy is received per unit area at the top of the earth’s atmosphere when the sun is at its … Read more

Photovoltaic System for power generation and Function of Each Block Q. Draw the basic photovoltaic system for power generation and state the function of each block. The basic solar electric system consists of five parts namely solar module, rechargeable batteries, control unit, distribution of electricity and electrical load. Solar module is used to generate electricity … Read more

Reasons for Variations in Solar Radiation Reaching the Earth Q. What are the reasons for variations in solar radiation reaching the earth and that are received at the outside of the atmosphere? While the solar radiation Incident on the earth’s atmosphere is relatively constant, the radiation at the earth’s surface varies widely due to : Atmosphere … Read more

Definitions of Solar Constant, Beam Radiation, Diffused Radiation and Insolation Q. Define the following terms related to solar radiations : (i) Solar constant (ii) Beam radiation , (iii)Diffused radiation, (iv)Insolation. Solar constant : The rate at which the sun’s energy is received per unit area at the top of the earth’s atmosphere when the sun is … Read more