I. Due to the resistance of the wire making the coil.
II. Using thick wire copper wire of low resistance.
joseph rimiru answered the question on December 4, 2017 at 19:59
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The primary coil of a transformer has 2000 turns and secondary coil is connect to a 240V a.c. mains supply (a) Explain how an e.m.f. is...
(Solved)
The primary coil of a transformer has 2000 turns and secondary coil is connect to a 240V a.c. mains supply.
(a)Explain how an e.m.f. is induced in the secondary voltage.
(b)Determine the secondary voltage
Date posted:
December 4, 2017
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Answers (1)
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In a transformer the ratio of primary to secondary is 1:10. A current of 200mA flow through a 200 ohm resistor in the secondary circuit....
(Solved)
In a transformer the ratio of primary to secondary is 1:10. A current of 200mA flow through a 200 ohm resistor in the secondary circuit. Assuming that the transformer is 100% efficient, determine:
a. The secondary voltage.
b. The primary voltage.
c. The primary current.
Date posted:
December 4, 2017
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Answers (1)
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Electric power is transmitted over long distance at high voltage. Explain.
(Solved)
Electric power is transmitted over long distance at high voltage. Explain.
Date posted:
December 4, 2017
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Answers (1)
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Explain how the energy losses are reduced in a transform by having : (a) A soft iron core (b) A laminated core
(Solved)
Explain how the energy losses are reduced in a transform by having :
a. A soft iron core
b. A laminated core
Date posted:
December 4, 2017
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Answers (1)
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(Solved)
State the five terms of the semi empirical mass formula.
Date posted:
November 30, 2017
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Answers (1)
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(Solved)
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Date posted:
November 30, 2017
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Answers (1)
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State the two purposes of the iron core in AC transformer.
(Solved)
State the two purposes of the iron core in AC transformer.
Date posted:
November 30, 2017
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Answers (1)
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State two drawbacks of Thomson's Atomic model.
(Solved)
This is under Atomic Physics
Date posted:
November 29, 2017
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Answers (1)
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(Solved)
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Date posted:
November 29, 2017
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Answers (1)
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(Solved)
List five applications of friction
Date posted:
November 27, 2017
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Answers (1)
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(Solved)
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Date posted:
November 27, 2017
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Answers (1)
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(Solved)
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Date posted:
November 27, 2017
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Answers (1)
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(Solved)
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Date posted:
November 27, 2017
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Answers (1)
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(Solved)
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Date posted:
November 27, 2017
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Answers (1)
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(Solved)
Explain the effects of total internal reflection.
Date posted:
November 27, 2017
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Answers (1)
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(Solved)
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Date posted:
November 27, 2017
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Answers (1)
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(Solved)
State the law of reversibility.
Date posted:
November 27, 2017
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Answers (1)
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(Solved)
State two factors which affect frictional force of a body
Date posted:
November 27, 2017
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Answers (1)
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(Solved)
Why are sound waves grouped under mechanical waves?
Date posted:
November 25, 2017
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Answers (1)
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Give examples of waves that fall under electromagnetic waves.
(Solved)
Give examples of waves that fall under electromagnetic waves.
Date posted:
November 25, 2017
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Answers (1)