Electrical Engineering Test Preparation : Part 1

Test Preparation on Electrical Engineering Test Preparation : Part 1

1.

When the north poles of two bar magnets are brought close together, there will be

1no force
2a downward force
3a force of attraction
4a force of repulsion

2.

There is 900 mA of current through a wire with 40 turns. What is the reluctance of the circuit if the flux is 400 μWb?

114,400 At/Wb
21,440 At/Wb
39,000 At/Wb
490,000 At/Wb

3.

If two currents are in the same direction at any instant of time in a given branch of a circuit, the net current at that instant

1is zero
2is the sum of the two currents
3is the difference between the two currents
4cannot be determined

4.

Two 3.3 kΩ resistors are in series and this series combination is in parallel with a 4.7 kΩ resistor. The voltage across one of the 3.3 kΩ resistors is 12 V. The voltage across the 4.7 kΩ resistor is

124 V
212 V
30 V
46 V

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