INTRO TO ELECTRICAL ENGINEERING - TEST
1 QUESTIONS AND ANSWERS 100%
CORRECT!!!
, What does a source do? - ANSWER Provides energy - voltage & current sources
What does a load do? - ANSWER Consumes energy for some purpose. Often
represented as a resistor (could be motor, tv, bulb, etc.)
What is an ideal wire? - ANSWER A wire that conducts electric charge without any loss
of potential. It is a good approximation in many applications.
What doesn't an ideal wire represent well? - ANSWER Poor representation of long
distance transmission lines & microscopic IC's. The reason for this is longer & thinner
wires greatly increase the resistance.
What is a node? - ANSWER 1 or more ideal wires connected together.
What is the first step towards conducting a nodal analysis? - ANSWER Selecting a
reference node. This works like "sea level" as other node's voltages are relative to the
reference node.
Where should the ground node be placed? - ANSWER It's placement is arbitrary but if it
is grounded at the back end of a voltage source then the node on the other side of the
source equals the voltage of the source.
What is significant about the voltage of a node? - ANSWER Every point on a node has
the same electric potential (i.e. voltage).
What is a branch? - ANSWER A single electrical pathway. Consists of wires and
elements.
What is significant about the current through a branch? - ANSWER The current through
all elements on a branch is the same.
What is a loop? - ANSWER Any closed pathway, physical or conceptual.
What is a mesh? - ANSWER Closed electrical pathway that doesn't contain other closed
pathways.
1 QUESTIONS AND ANSWERS 100%
CORRECT!!!
, What does a source do? - ANSWER Provides energy - voltage & current sources
What does a load do? - ANSWER Consumes energy for some purpose. Often
represented as a resistor (could be motor, tv, bulb, etc.)
What is an ideal wire? - ANSWER A wire that conducts electric charge without any loss
of potential. It is a good approximation in many applications.
What doesn't an ideal wire represent well? - ANSWER Poor representation of long
distance transmission lines & microscopic IC's. The reason for this is longer & thinner
wires greatly increase the resistance.
What is a node? - ANSWER 1 or more ideal wires connected together.
What is the first step towards conducting a nodal analysis? - ANSWER Selecting a
reference node. This works like "sea level" as other node's voltages are relative to the
reference node.
Where should the ground node be placed? - ANSWER It's placement is arbitrary but if it
is grounded at the back end of a voltage source then the node on the other side of the
source equals the voltage of the source.
What is significant about the voltage of a node? - ANSWER Every point on a node has
the same electric potential (i.e. voltage).
What is a branch? - ANSWER A single electrical pathway. Consists of wires and
elements.
What is significant about the current through a branch? - ANSWER The current through
all elements on a branch is the same.
What is a loop? - ANSWER Any closed pathway, physical or conceptual.
What is a mesh? - ANSWER Closed electrical pathway that doesn't contain other closed
pathways.
