Acoil of 300 turns, wound on a core of non-magnetic material, has an inductance of 10 mh. calculate:

a. the flux produced by a current of 5 a;

b. the average value of the e. m.f. induced when a current of
5 a is reversed in 8 ms (milliseconds).

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

The higher the astm grain size number, the finer the gran is. a)-true b)-false