Digital Electronics
The effect of stray magnetic field on the actuating torque of a portable instrument is maximum when the operating field of the instrument and the stray fields are

 Inclined at 30°.
 Perpendicular.
 Inclined at 60°.
  Parallel.

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Digital Electronics
A PROM

 can be programmed any number of times
 can be programmed only once
 is erasable by ultraviolet light
 is mask programmed

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