Six resistors are in parallel. The two lowest-value resistors are both 1.2 kΩ. The total resistance_____________?

A. Is less than 6 kω
B. Is greater than 1.2 kω
C. Is less than 1.2 kω
D. Is less than 600 ω

The following resistors are in parallel across a voltage source: 220Ω , 470Ω , and 560Ω . The resistor with the least current is______________?

A. 220 ω
B. 470 ω
C. 560 ω
D. Impossible to determine without knowing the voltage

In a certain three-branch parallel circuit, R1 has 12 mA through it, R2 has 15 mA through it, and R3 has 25 mA through it. After measuring a total of 27 mA, you can say that____________?

A. R3 is open
B. R1 is open
C. R2 is open
D. The circuit is operating properly

For an oscillator to properly start, the gain around the feedback loop must initially be_________?

A. 1
B. Greater than 1
C. Less than 1
D. Equal to attenuation of feedback circuit

Five 100 Ω resistors are connected in parallel. If one resistor is removed, the total resistance is______________?

A. 25 ω
B. 500 ω
C. 100 ω
D. 20 ω

One condition for oscillation is_____________?

A. A phase shift around the feedback loop of 180o
B. A gain around the feedback loop of one-third
C. A phase shift around the feedback loop of 0o
D. A gain around the feedback loop of less than 1

The total resistance of a parallel circuit is 50 Ω. If the total current is 120 mA, the current through the 270 Ω that makes up part of the parallel circuit is approximately_______________?

A. 22 ma
B. 120 ma
C. 220 ma
D. 50 ma

The crystal oscillator frequency is very stable due to___________of the crystal?

A. Rigidity
B. Vibrations
C. Low q
D. High q

In a phase shift oscillator, the frequency determining elements are _______________?

A. L and c
B. R, l and c
C. R and c
D. None of the above

Hartley oscillator is commonly used in______________?

A. Radio receivers
B. Radio transmitters
C. Tv receivers
D. None of the above