1.

Assume two sources, one a current source, and another a voltage source. Further, assume the current source is ideal and rated at 1 A, and the voltage source is 2 V (positive on top) and is not ideal but has a 0.5 ohm internal impedance. Determine the power dissipated in the middle leg resistor.

1. 1 W

2. 2 W

3. 4 W

4. 160 mW

Figure 1: A two source network.

2.

A particular ac circuit has been reduced down to its Thevenin's equivalent whose Thevenin's voltage is 10 V _rms and its Thevenin's impedance is 0.414 + j1.414 ohms. What value of load impedance should be connected to the output terminals for maximum power to the load? Select the nearest value.

1. 2 /45 ?

2. 1.473 /73.3 ?

3. 0.414-j1.414 ?

4. 2 /0 ?

3.

Refer to problem 2 above. Instead of maximum load impedance connected to the output terminals, assume an ideal step-down transformer is connected to the terminals. Assume the transformer has a turns ratio of 2:1 (where the 2 side is connected to Thevenin's terminals) and that a load of a pure resistance of 0.25 ohm is connected to the output of the transformer. What is the power dissipated in the load? Select the nearest answer.

1. 25 W

2. 6.25 W

3. 20 W

4. 11.2 W

4.

An op-amp is connected in the inverting mode (with the positive input terminal grounded) with the output taken directly to an rms reading voltmeter. What is the meter reading if an...