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ECE 231 Quiz 1A Solution Set

# ECE 231 Quiz 1A Solution Set - Name Signature ECE 231...

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ECE 231 Spring 2011 Quiz 1 Make sure to include the correct units (Amperes, Volts, Ohms) in your equations and in your answers Name ________________________________ Signature _____________________________

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Problem #1 Quiz version 1 (20 points) i1 i1 b a vab i1 Direction (EAST or WEST) 5 Volts 2 Amperes EAST 5 Volts -2 Amperes WEST -5 Volts 2 Amperes WEST Box A Box B For each of the four (4) cases, fill in the direction of positive power flow Name ________________________________ WEST Solution: If Vab x the current flowing into box A via node a is positive, then positive power is flowing into box A (i.e. the positive power flow direction is WEST). The current flowing into box A via node a is -i1
Problem #1 Quiz version 2 (20 points) i1 i1 b a vab i1 Direction (EAST or WEST) 5 Volts -2 Amperes WEST 5 Volts 2 Amperes EAST -5 Volts -2 Amperes EAST Box A Box B For each of the four (4) cases, fill in the direction of positive power flow Name ________________________________ WEST Solution: If Vab x the current flowing into box A via node a is positive, then positive power is flowing into box A (i.e. the positive power flow direction is WEST). The current flowing into box A via node a is -i1

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ECE 231 Quiz 1A Solution Set - Name Signature ECE 231...

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