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Why are BJT still used?
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A 3 φ I.M. has synchronous speed of 250rpm and 4% slip at full load. The rotor has a resistance of 0.02Ω/ph and stand still reactance of 0.15Ω/ph. Calculate i) The speed at which max torque is developed. ii) The ratio of maximum to F. L. torque. iii) The ratio of maximum to starting torque.

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Which BJT is mostly used?
Answer : The most commonly used BJT (Bipolar Junction Transistor) is the **NPN transistor**. This is because NPN transistors are easier to use in many electronic circuits compared to PNP transistors. In ... due to their higher electron mobility, which makes them faster and more efficient in many circuits....

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Why FET is more stable than BJT?
Answer : FETs (Field-Effect Transistors) are generally considered more stable than BJTs (Bipolar Junction Transistors) for several reasons: 1. **No Current Flow Through the Control Terminal**: In ... operation, and have higher input impedance, making them less sensitive to variations in their environment....

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What are the key differences between a bipolar junction transistor (BJT) and a MOSFET?

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