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CRT-------CRO
Deflection is caused by magnetic field---deflection is caused by electric field
Has two time bases---Has onetime base.
Produces 625 times per second---produce 25 lines per second.
joseph rimiru answered the question on December 4, 2017 at 20:07
- The follow table shows electric appliances to be used in a home. The electrical rating for each appliance is shown. The fuses available are 5A,...(Solved)
9. The follow table shows electric appliances to be used in a home. The electrical rating for each appliance is shown. The fuses available are 5A, 15A, 30A and 45 A
Appliance-----voltage(V)-----Power(w)
T.V.----------240----------300
Iron box------240----------720
Electrical kettle--240----2400
Determine which one of the fuses is suitable for the house.
Date posted: December 4, 2017. Answers (1)
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Alternating current (a.c.) is used for transmitting electricity over long distance, state the reason.
Date posted: December 4, 2017. Answers (1)
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Heating in the coils when current flows is one of the causes of energy loss in a transformer. State :
(i) The reason why the current causes heating.
(ii)How the heating can be minimized.
Date posted: December 4, 2017. Answers (1)
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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 induced in the secondary voltage.
(b)Determine the secondary voltage
Date posted: December 4, 2017. Answers (1)
- 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. Answers (1)
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Electric power is transmitted over long distance at high voltage. Explain.
Date posted: December 4, 2017. 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
Date posted: December 4, 2017. Answers (1)
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Date posted: November 30, 2017. Answers (1)
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Date posted: November 30, 2017. Answers (1)
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Date posted: November 30, 2017. Answers (1)
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Date posted: November 30, 2017. Answers (1)
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Date posted: November 27, 2017. Answers (1)