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Transformers
Page 3
Questions (144)
A transformer has 3000 loops in its primary coil and 1500 loops in its secondary coil. What is the voltage in the secondary coil
2 answers
asked by
farhana
551 views
A transformer consists of 275 primary windings and 834 secondary windings. If the potential difference across the primary coil
2 answers
asked by
J
556 views
A neighbourhood requires 1.5 x 10^5 w of electricity to power all homes during peak usage times. A step-down transformer is used
2 answers
asked by
Sandara
549 views
The primary coil of a transformer is connected to a standard wall socket. A resistance R is connected across the secondary coil.
2 answers
asked by
josh
542 views
a 230v/30v with 50Hz transformer that has a primary current of 0.6A which supplys number of 30v and 30 watts halogen light bulb.
2 answers
asked by
Mike
526 views
An electrical power plant generates electricity with a current of 50A and a potential difference of 20,000 V. In order to
2 answers
asked by
Anonymous
534 views
A transformer with 1890 turns in its primary coil has to decrease the voltage from 4620 V to 220 V for home use. How many turns
2 answers
asked by
Brian
499 views
a 230v/30v with 50Hz transformer that has a primary current of 0.6A which supplys number of 30v and 30 watts halogen light bulb.
2 answers
asked by
mike
514 views
for long distance transmission of electricity, voltages of 1- 26 kv at the generator are stepped up high levels, 230-768 kv. in
2 answers
asked by
wazir
505 views
A step-down transformer operates a 2400v and supplied a current of 60A. The turns ratio of the transformer is 1/24. Calculate
a)s
1 answer
asked by
Sannu Xeno
498 views
Using 3 - 4 complete sentences, explain the role of both types of transformers in getting electric energy from an electric power
2 answers
asked by
Alisia
494 views
This question really has me stumped and I don't know why, I seem to have forgotten the process . . .
A model electric train
3 answers
asked by
Melinda
481 views
A step-down transformer operates a 2400v and
supplied a current of 60A. The turns ratio of the transformer is 1/24. Calculate
2 answers
asked by
Anonymous
474 views
An ideal transformer is needed to step the voltage down from 400V to 115V. The primary has 400 turns. How many turns would be
2 answers
asked by
Crystal
468 views
What is the difference between a step-up and a step-down transformer? Give examples where each would be used.
3 answers
asked by
Anonymous
463 views
A transformer has N1=709turns in the primary coil and N2=1848turns in the secondary coil. If the input voltage is
1 answer
asked by
Anne
464 views
True or False: The input current to a transformer is direct current.
1 answer
asked by
Fifilafoop
448 views
Alternating current going into a transformer has 200 volts. The current coming out has 20 volts. How many loops of wire might
1 answer
asked by
Shawn
442 views
The generator at power plant produce a voltage of 25000V for long distance transmission on overhead power lines. This is stepped
1 answer
asked by
GILBERT REVOCATUS KIHALI
44 views
AC current is transmitted through a combination of two step-down transformers. the original potential difference is 1200V, there
1 answer
asked anonymously
25 views
A three phase transformer has the following specs 300 KVA 440V. the impedance marked on the nameplate is 3.3% . Determine the
1 answer
asked anonymously
21 views
A model train transformer delivers 14v to the engine. If the input voltage to the transformer is 100v and primary coil contains
1 answer
asked anonymously
26 views
A transformer has N1=360turns and NOW=2000turns. If the input voltage is 170cos(omega time)v, what rms voltage is developed
1 answer
asked anonymously
21 views
A transformer has N1=350turns and NOW=2000turns. If the input voltage is 170cos(omega time)v, what rms voltage is developed
1 answer
asked anonymously
23 views
A transformer has N1=350turns and N2=2000turns. If the input voltage is 170cos(omega time)v, what rms voltage is developed
1 answer
asked anonymously
22 views
A voltage of 120v a.c is supplied to a calculator which uses only 24v. What type of transformer is required? If the resistance
1 answer
asked anonymously
18 views
A transformer has 1800 primary turns and 120 secondary turns. The input voltage is 120b and the output current is 8.0A. what is
1 answer
asked anonymously
23 views
Write 20 examples of primary transformers and 20 examples of secondary transformers
1 answer
asked anonymously
17 views
A transformer is being built to the voltage produced. Which data are collected to investigate whether the transformer can
1 answer
asked anonymously
17 views
Suppose that you want to build a transformer that will convert 70 V power coming in the primary coil to 245 V power going out of
1 answer
asked anonymously
19 views
Suppose that you want to build a transformer that will convert 70 V power coming in the primary coil to 245 V power going out of
1 answer
asked anonymously
19 views
State the transformer ratio of a single phase transformer
1 answer
asked anonymously
12 views
What do you understand by an ideal transformer
1 answer
asked anonymously
4 views
Can a transformer have equal number of turns in the primary and secondary sides?
1 answer
asked anonymously
5 views
the primary voltage of a transformer is 120 volts and its primary coil is 270 turns. calculate the output voltage if the
1 answer
asked by
Dari b
32 views
A three-phase transformer has 2000 turns on the primary side and 400 turns on the secondary side. For a supply voltage of 33kV,
1 answer
asked anonymously
24 views
The magnetising and core-loss components of the no-load current of a transformer are 4,105A and 1,1A, respectively. Calculate
1 answer
asked anonymously
23 views
Which of the following invitations increased the availability of electricity in homes a telephone B transformer C reinforced
1 answer
asked anonymously
13 views
A transformer with more windings on the primary coil than on the secondary coil does which of the following?
Steps up the
1 answer
asked anonymously
7 views
A transformer has 700 turns on its secondary and 100 turns on its primary. The primary is connected to a 14-V source.
(a) What is
1 answer
asked anonymously
20 views
If the primary coil of a transformer is 200 tums and the secondary coil has 100 tums ,and the input voltage is 240v, what is the
1 answer
asked anonymously
12 views
I want to create a Transformer that transforms into an A-10 Thunderbolt. What type of transformer would he be (Autobot,
6 answers
asked by
A10THUNDERBOLT
12 views
how big is unicron from transformers
1 answer
asked by
your DAD
6 views
2. A step-down transformer has 200 turns of wire in its primary coil. How
many turns are in the secondary coil if the input
1 answer
asked anonymously
5 views
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