Q.

In ultrasonic welding, the frequency range is generally

  • A2000 to 3000 Hz
  • B4000 to 20000 Hz
  • C30000 to 40000 Hz
  • D50000 to 80000 Hz
Correct Answer : (B)

4000 to 20000 Hz

Hints :

In ultrasonic welding, the frequency range is generally 4000 to 20000 Hz.

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