Power Semiconductor Diodes and Transistors Sample Electrical Engineering Job Questions, Practice Questions on Power Semiconductor Diodes and Transistors, Job Interview Questions and Written Test Questions:
What is a diode?
What are Schottky diodes?
P-N Junction Diodes
What are the Characteristics of diodes? VI Characteristics
Explain the Storage Charge, Rate of change of Current of Diodes, Cut in Voltage.
Various Types of Power Diodes
Explain Recovery Time, Reverse Recovery Current, Softness Factor.
What is a BJT or Bipolar Junction Transistor?
Various BJTs & their circuit symbols.
Alpha and beta for BJT.
Explain the Hard drive and over drive factor for BJT.
When does a BJT operate as a switch?>
Collector current remains constant at Saturation with increase in base current.
What is Switch on and Switch off energy loss.
Describe Power MOSFET, Transfer output & Switching Characteristics.
Comparison of BJT & MOSFET
What is IGBT, its Features and working, Characteristics – Input / Transfer, Switching Characteristics & Applications.
Explain MCT- MOS Controlled Thyristor. What are turn on and turn off processes? Draw circuit. Applications of MCT.
Numericals about calculation of Inverse Current, RMS Current, Storage Charge, Recovery Time and Power Loss for Diodes.
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