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Which of the following is an ohmic conductor
- a)Transistors
- b)Thermionic values
- c)constanton
- d)Electrolyte
Correct answer is 'C'. Can you explain this answer?
Verified Answer
Which of the following is an ohmic conductora)Transistorsb)Thermionic ...
An ohmic conductor is a material that obeys Ohm's Law. The resistance of an ohmic conductor is defined as the potential difference across the conductor divided by the current flowing through it.
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Which of the following is an ohmic conductora)Transistorsb)Thermionic ...
Explanation:
When an induction motor is directly switched on, it experiences a high inrush current due to the magnetizing current required to establish the magnetic field in the stator. This inrush current can be up to 6-7 times the rated current of the motor.
As a result of this high inrush current, the motor develops a high starting torque. This starting torque is usually 1.5 to 2.5 times the full load torque of the motor.
However, direct switching on of an induction motor can cause several problems such as high starting current, high mechanical stress on the motor shaft, and reduced motor life. Hence, it is advisable to use some form of motor starting technique such as star-delta starting or soft starters to reduce the inrush current and starting torque of the motor.
When an induction motor is directly switched on, it experiences a high inrush current due to the magnetizing current required to establish the magnetic field in the stator. This inrush current can be up to 6-7 times the rated current of the motor.
As a result of this high inrush current, the motor develops a high starting torque. This starting torque is usually 1.5 to 2.5 times the full load torque of the motor.
However, direct switching on of an induction motor can cause several problems such as high starting current, high mechanical stress on the motor shaft, and reduced motor life. Hence, it is advisable to use some form of motor starting technique such as star-delta starting or soft starters to reduce the inrush current and starting torque of the motor.
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Community Answer
Which of the following is an ohmic conductora)Transistorsb)Thermionic ...
Device which obeys ohm's law is called ohmic conductor.All semiconductors are non ohmic ,they violates ohm's law similarly electrolyte is non ohmic .In given option only constanton follow ohm's law .
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