Using a soft iron would allow the magnetism of the core to be changed easily, lessening the amount of energy lost and increasing the efficiency of the transformer.
Arnold Diru answered the question on June 23, 2018 at 03:13
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Describe how an image is formed on a CRO screen
(Solved)
Describe how an image is formed on a CRO screen.
Date posted:
June 19, 2018
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Answers (1)
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Explain the meaning of Electric potential
(Solved)
Explain the meaning of Electric potential
Date posted:
June 18, 2018
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Answers (1)
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Explain the meaning of an Electric Field, E(r).
(Solved)
Explain the meaning of an Electric Field, E(r).
Date posted:
June 18, 2018
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Answers (1)
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In a hydraulic piston, a force of 200N is applied to a master piston of area 25cm squared. If the press is designed to produce...
(Solved)
In a hydraulic piston, a force of 200N is applied to a master piston of area 25cm squared. If the press is designed to produce a force of 5000N determine the area of the slave piston.
Date posted:
June 16, 2018
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Answers (1)
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(i)When is a Charged conductor said to be in electrostatic equilibrium? (ii)What are the guidelines followed charge and electric field at electrostatic equilibrium?
(Solved)
i)When is a Charged conductor said to be in electrostatic equilibrium?
ii)What are the guidelines followed charge and electric field at electrostatic equilibrium?
Date posted:
June 14, 2018
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Answers (1)
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What are the Differences between Gravitational and Coulomb forces
(Solved)
What are the Differences between Gravitational and Coulomb forces
Date posted:
June 14, 2018
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Answers (1)
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What are the Similarities between of the gravitational and Coulomb forces
(Solved)
What are the Similarities between of the gravitational and Coulomb forces
Date posted:
June 14, 2018
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Answers (1)
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Discuss the disadvantages of friction
(Solved)
Discuss the disadvantages of friction.
Date posted:
June 8, 2018
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Answers (1)
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A car of mass 1200kg moving at 90km/h is brought to rest over a distance of 20m. Calculate the breaking force.
(Solved)
A car of mass 1200kg moving at 90km/h is brought to rest over a distance of 20m. Calculate the breaking force.
Date posted:
June 5, 2018
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Answers (1)
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For a body moving with a constant acceleration, a,show that v=u+at where v and u are the final and initial velocities respectively while t is...
(Solved)
For a body moving with a constant acceleration, a,show that v=u+at where v and u are the final and initial velocities respectively while t is the time taken
Date posted:
June 5, 2018
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Answers (1)
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Distinguish between density and relative density
(Solved)
Distinguish between density and relative density.
Date posted:
May 25, 2018
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Answers (1)
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State two advantages of a thermocouple over a mercury in glass thermometer
(Solved)
State two advantages of a thermocouple over a mercury in glass thermometer
Date posted:
May 23, 2018
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Answers (1)
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Give a reason why water wets glass while mercury does not
(Solved)
Give a reason why water wets glass while mercury does not
Date posted:
May 19, 2018
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Answers (1)
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Describe how to fit an iron tyre in a wheel of a train
(Solved)
Describe how to fit an iron tyre in a wheel of a train.
Date posted:
May 10, 2018
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Answers (1)
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Describe how you can measure the diameter of a tennis ball
(Solved)
Describe how you can measure the diameter of a tennis ball.
Date posted:
May 10, 2018
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Answers (1)
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Briefly describe an experiment to show how the image is formed in a pinhole camera
(Solved)
Briefly describe an experiment to show how the image is formed in a pinhole camera
Date posted:
May 7, 2018
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Answers (1)
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List applications of expansion in gases
(Solved)
List applications of expansion in gases.
Date posted:
April 28, 2018
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Answers (1)
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Explain how a solar water purifier works
(Solved)
Explain how a solar water purifier works.
Date posted:
April 28, 2018
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Answers (1)
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You are provided with a strong bar, a ruler and 10 kg weight. How would you use them to weight a sack of potatoes?
(Solved)
You are provided with a strong bar, a ruler and 10 kg weight. How would you use them to weight a sack of potatoes?
Date posted:
April 27, 2018
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Answers (1)
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A girl is shouting in front of the cliff from far away. She hears the echo 0.5 sec later. What is the velocity of sound in air
(Solved)
A girl is shouting in front of the cliff from far away. She hears the echo 0.5 sec later. What is the velocity of sound in air.
Date posted:
April 26, 2018
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Answers (1)