Power plant converts the energy from the raw materials of the Earth into electric current.This is done with the help of huge generators, Which are driven by water, steam or wind. Electricity is transmitted at very high voltages through transmission towers to near the point of requirement of electricity and by the use of substations the voltage brings down to 230 V or 115 V to use at our homes or to use in industries at 440 V or above.
Friday, July 24, 2015
Thursday, July 16, 2015
Tuesday, July 14, 2015
Meaning of Pushkaram
Pushkaram is a Sanskrit word meaning “the one who purifies”. Pushkaram is the time during which the rivers are worshipped. In India festivals are mainly the days that hold spiritual significances like birthdays of gods, goddesses, religious seers and saints apart from some national festivals. Among them Pushmaram is considered to be very sacred as the rivers in India are equivalent to goddesses. It is celebrated for 12 sacred rivers which represent 12 zodiac signs according to Hindu mythology and it comes once in 12 years.
Pushkaram comes for every 12 years and is the duration of the Jupiter entering and staying in the concerned zodiac sign. Each zodiac is associated with 12 rivers as follows: Ganges River with Aries; Narmada River with Taurus; Saraswati River with Gemini; Yamuna River with Cancer; Godavari River with Leo; Krishna River with Virgo; Kaveri River with Libra; Bhima River or Tambaraparni with Scorpio; Brahmaputra River with Sagittarius; Tungabhadra River with Capricorn; Indus River with Aquarius; Pranahita (tributary of Godavari) River with Pisces.
The first twelve days when the Jupiter enters a zodiac sign is called Adi Puskharam. The last 12 days when the Jupiter leaves a zodiac are called Antya Pushkaram. These 24 days are celebrated on the banks of the respective rivers with pomp and vigor. A holy dip taken in the waters of the rivers during Pushkaram will wash away all our sins. This is a very strong belief in Hinduism. Along with prayers, people also do rites to the ancestors on the banks of the rivers during the time of Pushkaram. It is believed that they will reach ultimate heavens emancipated from cycle of life and death because of these rites.
Sunday, July 12, 2015
How to Determine Internal Resistance of a battery ?
Apparatus required:
One Battery, One Ammeter and one Voltmeter.
Experimental setup:
Voltmeter - Used to measure the open circuit voltage of the battery.
Ammeter - Used to measure the short circuit current of the battery.
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Experimental results are tabulated in observation table. The internal resistance of the battery is given by:
Open Circuit Voltage
R =
Short Circuit Current
Saturday, July 11, 2015
Answer this Question.
EMQ1. The company "Save Electricity the Smart Way" sells you a gadget that lovers the voltage of your electric water storage heater by 10% and saves electricity by 10% . The heater is rated at 2 KW at 230V . Do you agree with the claim of the company ? Support your opinion.
EMQ1.Ans: The answer is "No electricity saved". Due to the lower voltage the KW load will go down. Therefore the process to heat the water will take longer based on the energy balance. The electricity consumption in fact goes slightly up on paper.
EMQ1.Ans: The answer is "No electricity saved". Due to the lower voltage the KW load will go down. Therefore the process to heat the water will take longer based on the energy balance. The electricity consumption in fact goes slightly up on paper.
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