Answer: D. 14. Driving function is __________ produced by ______ because it represents an input that causes a circuit ______.

 

14. Driving function is __________ produced by ______ because it represents an input that causes a circuit ______.

A. voltage…source…output. B.current …source…output.

C. voltage or current…ideal source…response. D. voltage…ideal source…output

E. current …ideal source…output

 

Solution:

Driving function is voltage or current produced by ideal source because it represents an input that causes a circuit response.

Answer: C.

15. Define Vo for the circuit to the right.

A.1V B. – 1V C. 6V D. 5V E. – 5V

 

Solution:

Equivalent circuit is

 

By KVL: 10 + 6 + v₀ – 15 = 0; v₀ = –1V

Answer: B.

16. Define Thevenin voltage for the circuit in Fig.9.

A.9V B. 8V C. 6V D. 5V E. 3V

Fig. 9

Solution:

Equivalent current source will be 15/3*10³=5mA

 

 

Equivalent current source and resistors in parallel will be 5–2=3mA and 6*3/9=2kΩ

 

 

Equivalent voltage source and resistors in series will be 3*2=6 and 4+2+3=9kΩ

 

Answer: C.

 

 

17. Equivalent resistance of parallel arrangement is equal to 6 Ω. Two resistors are connected in a parallel, one of them is 10 Ω. What is the second one?

A.15 Ω; B.20 Ω C. 10 Ω D. 12 Ω E. 8 Ω

 

Solution:

R_EQ for two parallel branches is . We know that R_EQ=6W and one of the resistors equals 10W. Let the second one will be XW. Substituting these values gives equation . Solving for X gives us X=15W.

Answer: A.

18. Find the correct formula for p. p =

A. vi B. dw/dq C.dq/dt D. dq/dv E. di/dt

Solution: p=dw/dt=vi.