15 Ideal VS Practical Switches | Power Electronics

15 Ideal VS Practical Switches | Power Electronics

Assessment

Interactive Video

•

Engineering, Physics, Science

•

University

•

Practice Problem

•

Hard

Created by

Wayground Content

FREE Resource

This video tutorial covers the basics of power electronics, focusing on the characteristics and control of switches, both ideal and practical. It explains the differences between active and passive control methods and delves into the calculation of switching losses for resistive and inductive loads. The tutorial concludes with a brief introduction to LT Spice for validating calculations.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is one method to achieve higher efficiency in power electronics?

Increasing the power supply voltage

Selecting good switches to dissipate less heat

Using larger switches

Decreasing the load resistance

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can switches be controlled?

Neither actively nor passively

Both actively and passively

Only actively

Only passively

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a key difference between transistors and thyristors?

Thyristors can be fully controlled

Transistors can be turned on and off actively

Thyristors do not require a control signal

Transistors can only be turned on, not off

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the average power dissipation calculated for a resistive load?

By adding the on and off state losses

By subtracting the conduction losses from the switching losses

By multiplying the maximum voltage and current

By integrating the instantaneous power over one period

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an ideal switch, what is the power dissipation during the on state?

Maximum

Zero

Infinite

Depends on the load

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the voltage across a practical switch when it turns on?

It becomes zero

It remains constant

It drops to a small value

It increases to maximum

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main difference in switching losses between resistive and inductive loads?

Resistive loads have three times the switching losses of inductive loads

Inductive loads have three times the switching losses of resistive loads

Resistive loads have higher switching losses

Inductive loads have lower switching losses

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