Article - 7 (MT)

Question 1

PROD TECHNIQUE:
Direct or rectified magnetizing current shall be used. The current shall be 1 0 0 ( m i n i mu m ) a m p / i n . t o 125 (maximum) amp/in. of prod spacing for sections ____________

Answer 1

3/4 in. (19 mm) thick or greater

Question 2

PROD TECHNIQUE:
Direct or rectified magnetizing current shall be used. The current shall be 90 ( m i n i mu m ) a m p / i n . t o 110 (maximum) amp/in. of prod spacing for sections ____________

Answer 2

less than 3/4 in. (19 mm) thick

Question 3

Prod spacing shall not exceed ______, but prod spacings of less than _____ due to banding of the particles around the prods

Answer 3

8 in.

3 in.

Question 4

Magnetizing equipment with an ammeter shall be calibrated at least ___________________

Answer 4

once a year

Question 5

Each alternating current electromagnetic yoke shall

have a lifting power of at least _______ at the maximum pole spacing that will be used.

Answer 5

10 lb

Question 6

Each direct current or permanent magnetic yoke
shall have a lifting power of at least __________ at the
maximum pole spacing that will be used.

Answer 6

40 lb

Question 7

Direct visual examination may usually be made when access is sufficient to place the eye within _______of the surface to be examined and at an angle not less than ________ to the surface to be examined

Answer 7

24 in.

30 deg

Question 8

AC yokes must be able to lift______pounds at a maximum spacing of_______.

Answer 8

10 lb

8 in. or 1 1/2 feet