The coil in an electric generator has 150 loops and each loop has an area of 2.5 x10^-3 m2. It is desired that the maximum emf of the coil be 240 V when it rotates with an angular frequency of 60 Hz (60.0 cycles per second).Find the strength of the magnetic field, B, required for this generator to operate at the desired voltage.

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

v=ir = 3x15 =45 v