DC to AC inverters operate by switching a direct current electron flow through an inductive coil located closely to a second inductive coil. Energy is transmitted electromagnetically between the coils to produce a current flow. The size of each coil is designed to meet the required frequency and voltage range. Electromagnetic energy transfer is not entirely efficient; therefore, inverters are inefficient.
Dominic M answered the question on June 28, 2018 at 16:25
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Define Hydroelectric Power
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June 28, 2018
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June 28, 2018
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June 26, 2018
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June 23, 2018
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State the reasons for biasing a transistor.
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June 22, 2018
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June 22, 2018
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Date posted:
June 14, 2018
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June 14, 2018
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List the steps in the calorimeter method of measuring heat capacity of solid
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List the steps in the calorimeter method of measuring heat capacity of solid
Date posted:
June 2, 2018
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Date posted:
April 30, 2018
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What are the advantages and disadvantages of induction motors?
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Advantages and disadvantages of induction motors.
Date posted:
April 30, 2018
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Explain the advantages of induction motors over synchronous motors
(Solved)
Explain the advantages of induction motors over synchronous motors
Date posted:
April 30, 2018
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Into a stream, with no trace of salt initially, a salt with a concentration of 20 mg/cc is introduced at a constant rate of 2...
(Solved)
Into a stream, with no trace of salt initially, a salt with a concentration of 20 mg/cc is introduced at a constant rate of 2 litres per minute. The samples collected at a downstream section sufficiently far away indicated an equilibrium salt concentration of 0.05 ppm. Determine the discharge in the stream from this data.
Date posted:
April 9, 2018
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Answers (1)
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The following data pertain to streamflow in a river at a given gauge station. The rate of rise in water surface elevation = 10.0 cm/h....
(Solved)
The following data pertain to streamflow in a river at a given gauge station. The rate of rise in water surface elevation = 10.0 cm/h. the normal discharge for the river stage obtained from the steady flow rating curve = 150 m3/s. slope of the river bed = 3 x 10-4. Assume the velocity of the flood wave to be 2.5 cm/sec, compute the river discharge.
Date posted:
April 9, 2018
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Answers (1)
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A drainage basin has an area of 210 km2. The average depth of rainfall received by it during a monsoon period is computed as 65...
(Solved)
A drainage basin has an area of 210 km2. The average depth of rainfall received by it during a monsoon period is computed as 65 cm, while the runoff measured at its outlet during the same period is estimated to be 5.68 x 107 m3. Compute the depth of runoff. What percentage of rainfall has become runoff? If all this runoff volume is stored and used to irrigate a crop which requires 60 cm of water, how many hectares can be irrigated?
Date posted:
April 9, 2018
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Answers (1)
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What volume is represented by 57 mm of runoff depth from a basin of area 3300 km2? Give the answer in m3, cumec-days, ha-m and...
(Solved)
What volume is represented by 57 mm of runoff depth from a basin of area 3300 km2? Give the answer in m3, cumec-days, ha-m and million cubic metres.
Date posted:
April 9, 2018
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Answers (1)
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The mean daily flows at a gauging station for a period of 7 days are 7, 27, 58, 41, 31, 20 and 13 m3/s respectively....
(Solved)
The mean daily flows at a gauging station for a period of 7 days are 7, 27, 58, 41, 31, 20 and 13 m3/s respectively. What is the total volume of streamflow at the site in cumec-days(metres cubed per second.)? and in hectare-metres? What is the mean flow rate for the week? If the drainage area at the site is 100 km2, what is the runoff volume in cm?
Date posted:
April 9, 2018
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Answers (1)