Turns Ratio
Trending Questions
In a step up transformer, the ratio of turns of primary to secondary is 1:10 and the primary voltage is 230 V. If the load current is 2 A, then the current in the primary is
2 A
1 A
20 A
10 A
The turn ratio of a transformer is given as 2:3. If the current through the primary coil is 3 A, then calculate the current through load resistance.
4.5 A
2 A
1.5 A
1 A
A step-down transformer is to be constructed to obtain an output voltage of 60V by applying an input voltage of 110V. If the primary coil has 6600 turns, then the number of turns of the secondary coil will be 3600 turns.
True
False
- greater than 1
- less than 1
- equal to 1
A bulb filament allows passage of 2A current when connected to a 220V supply & that of 1.1A when connected to 110V. Does the filament obey Ohms law or not? Why?
Filament obey Ohms law
Filament does not obey Ohms law
Filament obey Ohms law at higher voltages only
Filament does not obey Ohms law at higher voltages only
Filament obey Ohms law at lower voltages only
What is the value of induced current if there is steady current in coil second????
How do you remove ripples from DC?
On which of the following factor/s does the turns ratio of transformers depend?
Vp and Vs
Vp only
Vs only
Ip only
The turns ratio of a transformer is 15 and the primary AC voltage is 9 V. What is the secondary voltage of the coil?
0.6 V
1.2 V
18 V
6 V
Why we use RL circuit?
For which transformer is turn ratio greater than 1?
What happens when DC is applied to inductor?
- 2volt
- 2.2volt
- 220volt
- 22volt
The resistance , where and . What is the total error in ?
- Motor
- Transistor
- Dynamo
- Diode
The given diagram shows an electron gun of a hot cathode ray tube.
A 6 V dc source and a 1000 V dc source are available. To obtain a focused beam of fast moving electrons the 6 V and 1000 V sources should be utilized such that
6 V dc source is connected to the terminals of X and 1000 V dc source is connected to the terminals of Y.
6 V dc source is connected to the terminals of X and terminals of Y
1000 V dc source is connected to the terminals of X and Y but 6 V dc source is connected to the terminals of X only.
1000 V dc source is connected to the terminals of X and 6 V dc source is connected to the terminals of Y.
1.what is a purpose of using the transformer? Can it be used with both current sources?
2. How can you determine the direction of magnetic field line by a straight wire?
- steps up current, steps down voltage
- steps up voltage, steps down current
- steps up power, steps downenergy
- steps up voltage, steps down power
- 1.7 V
- 0.85 V
- 1 V
- 0 V
The primary coil of a transformer contains 100 turns; the secondary has 200 turns. The primary coil is connected to a DC source that supplies a constant voltage of 1.5 volt. What is the voltage measured across the secondary coil?
0.75 volt
0 volt
1.5 volt
3 volt