Questions

Multiple-choice questions you can practise one by one. Open a question, tap an answer and see at once whether it is right. For a random set, try Quick practice.

32 questions

• An SCR is generally turned on by applying a suitable signal to its:

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• What is the full form of UJT?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• Which two-terminal device is commonly used to trigger a TRIAC?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• Which device is bidirectional and commonly used for AC power control?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• What is the main function of the gate terminal of an SCR?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• Which three terminals are present in an SCR?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• How many terminals does a conventional SCR have?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• What does SCR stand for?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• Which device is commonly used as a controlled rectifier switch?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy

• What is the purpose of a snubber network commonly connected across an SCR?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Hard

• Why is excessive di/dt at SCR turn-on potentially damaging?

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Hard

• In an SCR, the three terminals are called:

  Industrial Electronics & Control of Drives › Unit 1: Introduction to Thyristors · Easy