1.
A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?
A. 
B. 
C. 
D. 
2.
How much voltage is needed to produce 2.5 A of current through a 200 resistor?
A. 
B. 
C. 
D. 
3.
Twelve volts are applied across a resistor. A current of 3 mA is measured. What is the value of the resistor?
A. 
B. 
C. 
D. 
4.
When a fourth resistor is connected in series with three resistors, the total resistance
A. 
B. 
C. 
D. 
5.
The total power in a certain circuit is 12 W. Each of the four equal-value series resistors making up the circuit dissipates
A. 
B. 
C. 
D. 
6.
Three 680 resistors are connected in series with a 470 V source. Current in the circuit is
A. 
B. 
C. 
D. 
7.
If a 6 V and a 9 V source are connected series aiding, the total voltage is
A. 
B. 
C. 
D. 
8.
A certain Wheatstone bridge has the following resistor values: R1 = 10 k, R2 = 720 , and R4 = 2.4 k. The unknown resistance is
A. 
B. 
C. 
D. 
9.
The branch current method uses
A. 
Kirchhoff's voltage and current laws
B. 
Thevenin's theorem and Ohm's law
C. 
Kirchhoff's current law and Ohm's law
D. 
The superposition theorem and Thevenin's theorem
10.
How many degrees are there in /3 rad?
A. 
B. 
C. 
D. 
11.
To produce an 800 Hz sine wave, a four-pole generator must be operated at
A. 
B. 
C. 
D. 
12.
If the peak of a sine wave is 13 V, the peak-to-peak value is
A. 
B. 
C. 
D. 
13.
A signal with a 400 s period has a frequency of
A. 
B. 
C. 
D. 
14.
A sawtooth wave has a period of 10 ms. Its frequency is
A. 
B. 
C. 
D. 
15.
A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is
A. 
B. 
C. 
D. 
16.
An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
A. 
B. 
C. 
D. 
17.
The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
A. 
B. 
C. 
D. 
18.
In a three-phase system, the voltages are separated by
A. 
B. 
C. 
D. 
19.
In a three-phase system, when the loads are perfectly balanced, the neutral current is
A. 
B. 
C. 
D. 
20.
In a balanced three-phase load, each phase has
A. 
B. 
C. 
Two-thirds of total power
D. 
A power consumption equal to IL
21.
In a Y-connected circuit, between each line voltage and the nearest phase voltage, there is a phase angle of
A. 
B. 
C. 
D. 
22.
The most common type of ac motor is the
A. 
Single-phase induction motor
B. 
Two-phase induction motor
C. 
Three-phase induction motor
D. 
Two-phase squirrel-cage motor
23.
In Delta connected generator, all of the phase voltages are
A. 
B. 
C. 
D. 
24.
Materials with lots of free electrons are called
A. 
B. 
C. 
D. 
25.
The unit of electrical charge is the
A. 
B. 
C. 
D.