Question
Download Solution PDFWhich one of the following transformers has only single winding?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFAutotransformer:
- An Auto Transformer is a transformer with only one winding wound on a laminated core.
- An autotransformer is similar to a two-winding transformer but differs in the way the primary and secondary winding are interrelated.
- A part of the winding is common to both primary and secondary sides.
IMPORTANT NOTES:
Pulse transformer:
- A pulse transformer is an enhanced transformer that produces electrical pulses of great velocity and constant amplitude.
- They are often used in the transmitting of digital information and transistors.
- A pulse transformer is an enhanced transformer that produces electrical pulses of great velocity and constant amplitude.
- They are often used in the transmitting of digital information and transistors
Current transformer:
A current transformer (CT) is a type of transformer that is used to reduce or multiply an alternating current (AC).
- It produces a current in its secondary which is proportional to the current in its primary.
- The current transformer is used with the AC instrument, meters or control apparatus where the current to be measured is of such magnitude that the meter or instrument coil cannot conveniently be made of sufficient current-carrying capacity.
- The current transformer is used for measuring the high voltage current because of the difficulty of inadequate insulation in the meter itself.
- The current transformer is used in meters for measuring the current up to 100 amperes.
Potential transformer:
The potential transformer may be defined as an instrument transformer used for the transformation of voltage from a higher value to a lower value.
- This transformer step down the voltage to a safe limit value which can be easily measured by the ordinary low voltage instrument like a voltmeter, wattmeter and watt-hour meters, etc.
- The basic principle of operation and construction of this transformer is similar to the standard power transformer.
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