Quiz 5

Question 1

1)

The piezo electric effect is the only method of producing ultrasonic vibrations?

Question 2

2)

The magnetostrictive effect was discovered by Curie in 1880?

Question 3

3)

A transducer is a natural anisotropic material and is the onlt type used in ultrasonic testing?

Question 4

4)

Transverse waves may be produced from a quartz crystal?

Question 5

5)

The frequency of a transducer is determined by its thickness?

Question 6

6)

Ceramic transducers are widelt used in flaw detection?

Question 7

7)

Lead Zirconate Titanate is also called PZT?

Question 8

8)

Barium Titanate can be used at temperatures above 300 degrees celcius?

Question 9

9)

Quartz is the most efficient transducer material?

Question 10

10)

EMAT probes work on the principal of piezo electricity?

Question 11

11)

The X axis on the ‘A’ scan display shows amplitude?

Question 12

12)

A cathode ray tube has both X and Y plates?

Question 13

13)

A long pulse applied to the transducer gives good resolution?

Question 14

14)

**A short pulse applied to the transducer gives excellent transmission properties?***

Question 15

15)

A wide angle band width gives low penetration?