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It is a two-part assignment...

Need some more help with this final Electronics assignment. It is a two-part assignment. This is part 1 It would be great to have this by 2/13/2011. Mediafire: http://www.mediafire.com/?9q4u4ocvawl4uof

1.

What is Kirchhoff’s current law?

A) The algebraic sum of the currents at a node is zero.

B) The algebraic sum of currents around a closed path is zero.

C) The sum of currents around an open path is zero.

D) The sum of currents around a closed path is proportional to the total voltage.

2.

Select the relation between current and voltage given by Ohm’s law.

A) i(t) =Rv(t)

B) v(t) =Gi(t)

C) i(t) = 1/Gv(t)

D) i(t) =Gv(t)

3.

When a set of resistors is connected in parallel, how do we calculate the equivalent conductance?

A) Sum the individual conductances to get the total, equivalent conductance.

B) Invert each conductance, add, then invert again.

C) Sum up the individual conductances, then invert to get the total, equivalent conductance.

D) Equivalent conductance is not defined.

4.

Which types of dependent sources are valid?

A) Voltage-controlled voltage sources, current-controlled voltage sources, voltagecontrolled current sources, and current-controlled current sources.

B) Voltage controlled voltage sources and current controlled current sources only.

C) Current controlled voltage sources and voltage controlled current sources only.

D) Resistance controlled voltage and current sources.

5.

Energy in a circuit is measured in what units?

A) Watts

B) Ohms

C) Joules

D) Siemens

6.

How are mesh currents used in circuit analysis?

A) Mesh currents flow around a loop in a circuit, and are used to implement Kirchhoff’s voltage law.

B) Mesh currents are used to express Kirchhoff’s current law around a loop of the circuit.

C) Mesh currents are used to calculate branch currents.

D) Mesh currents are a calculational tool and never represent real currents.

7.

How are the Norton and Thevenin equivalent resistance related?

A) They are not related.

B) They are inversely related with a voltage proportionality factor.

C) They are equal.

D) The Norton resistance is twice the Thevenin resistance.

8.

How is the Norton current related to the Thevenin voltage?

A) They are not related.

B) By Ohm’s law.

C) Using Ohm’s law, by first calculating a Norton voltage which is then converted to the Norton current.

D) Using Ohm’s law, with the resistance equal to the sum of the resistances found in the original circuit.

9.

The superposition theorem is applied in what way?

A) Sum up the resistors to get an equivalent total resistance, then apply Ohm’s law.

B) Solve the circuit considering each source independently. Then add up the results.

C) Sum up the sources into a single super source.

D) Sum up the inverse of the resistors to get a total conductance.

10.

What is done to dependent sources when applying Norton’s theorem?

A) Voltage sources only are set to zero.

B) Voltage sources are replaced by open circuits, and current sources are replaced by short circuits.

C) If a dependent source depends on a voltage, it is left alone. If it depends on a current, it is set to zero.

D) Dependent sources are left unchanged.

11.

A circuit has a branch with three resistors in series of 2, 3, and 8 ohms respectively, connected in series. What is the equivalent resistance of the branch?

A) 13 ohms

B) 12 ohms

C) 24/23 ohms

D) 23/24 ohms

12.

A circuit has two resistors in parallel, 4 ohms each. Can they be replaced by a single resistor?

A) Replace them with an 8 ohm resistor.

B) Replace them with a 2 ohm resistor.

C) Replace them with a ½ ohm resistor.

D) Replace them with a 1/8 ohm resistor.

13.

In nodal analysis, what is the sign convention used for incoming current?

A) Positive

B) It is arbitrary, but must be kept consistent for the entire circuit.

C) It is arbitrary, and must be applied only at that node.

D) Negative

14.

In the SI system, capacitance is measured in what unit?

A) Henries

B) Ohms

C) Farads

D) Siemens

15.

What is the energy stored in a 10 F capacitor at t = 4seconds if v(t) =2+3t?

A) 1000 joules

B) 70 joules

C) 980 joules

D) 900 joules

16.

What is a pole?

A) A point in time where the current or voltage goes to zero.

B) A point in the s domain where the Laplace transform blows up.

C) A point in time where voltage or current blows up.

D) A point in the s domain where the Laplace transform goes to zero.

17.

What kind of operation is best modeled by the unit step function?

A) A unit step function can represent a switch turning voltage or current on at a specific time.

B) Unit step functions do not model circuit operation.

C) A unit step function can represent the gradual turning on of a current.

D) A unit step function can represent the gradual turning on of a voltage.

18.

Using the definition of the Laplace

1.

What is Kirchhoff’s current law?

A) The algebraic sum of the currents at a node is zero.

B) The algebraic sum of currents around a closed path is zero.

C) The sum of currents around an open path is zero.

D) The sum of currents around a closed path is proportional to the total voltage.

2.

Select the relation between current and voltage given by Ohm’s law.

A) i(t) =Rv(t)

B) v(t) =Gi(t)

C) i(t) = 1/Gv(t)

D) i(t) =Gv(t)

3.

When a set of resistors is connected in parallel, how do we calculate the equivalent conductance?

A) Sum the individual conductances to get the total, equivalent conductance.

B) Invert each conductance, add, then invert again.

C) Sum up the individual conductances, then invert to get the total, equivalent conductance.

D) Equivalent conductance is not defined.

4.

Which types of dependent sources are valid?

A) Voltage-controlled voltage sources, current-controlled voltage sources, voltagecontrolled current sources, and current-controlled current sources.

B) Voltage controlled voltage sources and current controlled current sources only.

C) Current controlled voltage sources and voltage controlled current sources only.

D) Resistance controlled voltage and current sources.

5.

Energy in a circuit is measured in what units?

A) Watts

B) Ohms

C) Joules

D) Siemens

6.

How are mesh currents used in circuit analysis?

A) Mesh currents flow around a loop in a circuit, and are used to implement Kirchhoff’s voltage law.

B) Mesh currents are used to express Kirchhoff’s current law around a loop of the circuit.

C) Mesh currents are used to calculate branch currents.

D) Mesh currents are a calculational tool and never represent real currents.

7.

How are the Norton and Thevenin equivalent resistance related?

A) They are not related.

B) They are inversely related with a voltage proportionality factor.

C) They are equal.

D) The Norton resistance is twice the Thevenin resistance.

8.

How is the Norton current related to the Thevenin voltage?

A) They are not related.

B) By Ohm’s law.

C) Using Ohm’s law, by first calculating a Norton voltage which is then converted to the Norton current.

D) Using Ohm’s law, with the resistance equal to the sum of the resistances found in the original circuit.

9.

The superposition theorem is applied in what way?

A) Sum up the resistors to get an equivalent total resistance, then apply Ohm’s law.

B) Solve the circuit considering each source independently. Then add up the results.

C) Sum up the sources into a single super source.

D) Sum up the inverse of the resistors to get a total conductance.

10.

What is done to dependent sources when applying Norton’s theorem?

A) Voltage sources only are set to zero.

B) Voltage sources are replaced by open circuits, and current sources are replaced by short circuits.

C) If a dependent source depends on a voltage, it is left alone. If it depends on a current, it is set to zero.

D) Dependent sources are left unchanged.

11.

A circuit has a branch with three resistors in series of 2, 3, and 8 ohms respectively, connected in series. What is the equivalent resistance of the branch?

A) 13 ohms

B) 12 ohms

C) 24/23 ohms

D) 23/24 ohms

12.

A circuit has two resistors in parallel, 4 ohms each. Can they be replaced by a single resistor?

A) Replace them with an 8 ohm resistor.

B) Replace them with a 2 ohm resistor.

C) Replace them with a ½ ohm resistor.

D) Replace them with a 1/8 ohm resistor.

13.

In nodal analysis, what is the sign convention used for incoming current?

A) Positive

B) It is arbitrary, but must be kept consistent for the entire circuit.

C) It is arbitrary, and must be applied only at that node.

D) Negative

14.

In the SI system, capacitance is measured in what unit?

A) Henries

B) Ohms

C) Farads

D) Siemens

15.

What is the energy stored in a 10 F capacitor at t = 4seconds if v(t) =2+3t?

A) 1000 joules

B) 70 joules

C) 980 joules

D) 900 joules

16.

What is a pole?

A) A point in time where the current or voltage goes to zero.

B) A point in the s domain where the Laplace transform blows up.

C) A point in time where voltage or current blows up.

D) A point in the s domain where the Laplace transform goes to zero.

17.

What kind of operation is best modeled by the unit step function?

A) A unit step function can represent a switch turning voltage or current on at a specific time.

B) Unit step functions do not model circuit operation.

C) A unit step function can represent the gradual turning on of a current.

D) A unit step function can represent the gradual turning on of a voltage.

18.

Using the definition of the Laplace

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