电工电子学双语题

1.6 If the interconnection is valid find the total power developed in the circuit. If the interconnection is not valid, explain why.

ANSWER: Valid interconnection, 3100W

1.9 Use Ohm’s law and Kirchhoff’s law to find the value of R in the circuit shown.

ANSWER:

2.2 (a) Find the no-load value of v_o in the circuit shown.

(b) Find v_o when R_L is 150 k .

(c) How much power is dissipated in the 25 k k  resistor if the load terminals are accidentally short-circuited?

(d) What is the maximum power dissipated in the 75 k  resistor?

ANSWER: (a)150 V; (b)133,33 V; (c)1.6 W; (d)0.3W.

2.4 (a) Use a series of source transformations to find the voltage v in the circuit shown.

(b) How much power does the 120V source deliver to the circuit?

ANSWER: (a) 48 V; (b)374.4W.