Electrical Engineering Answers

Simplify the following Boolean functions using three-variable map:

F (x, y, z) = Σ (0, 1, 5, 7) 

Three cells each with an emf of 2,5 V and an internal resistance of 0,2 ohms are connected in series and across 15 ohms

The total charge entering a terminal is q=(10-10e-2t) mC. Calculate current at t=0.5 s

A 12 V battery of 0.05-ohm resistance and

another battery of 12 V and 0.075-ohm resistance

supply power to a 2-ohm resistor. What is the

current through the load?

what is the peak value is sinusoidal alternating current of 4.78 rms amperes

Transform the vector A = 3i – 2j – 4k at P(2,3,3) to cylindrical coordinates.

ans.-3.6j – 4k

Two circular loops A and B have their planes parallel to each other.

Loop A has a current moving in the counter clockwise direction, viewed from above.

1. If the current in loop A decreases with time, what is the direction of the induced current in loop B? Will the two loops attract or repel each other?

2. If the current in loop A increases with time, What is the direction of the induced current in loop B? Will the two loops attract or repel each other?

A bar magnet falls through a circular loop .

(a) describe qualitatively the change in magnetic flux through the loop when the bar magnet is above and below the loop.

(a) make a qualitative sketch of the graph of induced current in the loop as a function of time, choosing current to be positive when it's direction is counterclockwise a s viewed from above

A Spherical conducting shell is placed in a time varying magnetic field,is there an electric field along the equator?

Two circular loops And B have their planes parallel to each other,loop A has a current moving on the counterclockwise direction viewed from above.

(a)if the current in the loop A decrease with time,what is the direction of the induced current in the loop B.will the two loops attract or repel each other?

(b)if the current in loop A increases with time,what is the direction of induced current in loop B?,will the two loops attract or repel each other?