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Discussion
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Electrical Engineering
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Quantities and Units
See What Others Are Saying!
Question
The number 4,500,000 can be expressed as
Options
A. 4,500 × 10
6
B. 4.5 × 10
6
C. 4.5 × 10
-3
D. either 4,500 × 10
4
or 4.5 × 10
6
Correct Answer
4.5 × 10
6
More questions
1. Generally, the mesh current method results in fewer equations than the node voltage method.
Options
A. True
B. False
Show Answer
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Correct Answer: False
2. If there are a total of 120 mA into a parallel circuit consisting of three branches, and two of the branch currents are 40 mA and 10 mA, the third branch current is
Options
A. 50 mA
B. 70 mA
C. 120 mA
D. 40 mA
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Discuss
Correct Answer: 70 mA
3. If you know the current anywhere in a series circuit, you know the current everywhere in a series circuit.
Options
A. True
B. False
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Correct Answer: True
4. A wiper is the sliding contact in a
Options
A. switch
B. photoconductive cell
C. thermistor
D. potentiometer
Show Answer
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Discuss
Correct Answer: potentiometer
5. When an additional resistor is connected across an existing parallel circuit, the total resistance
Options
A. remains the same
B. decreases by the value of the added resistor
C. increases by the value of the added resistor
D. decreases
Show Answer
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Discuss
Correct Answer: decreases
6. A lower
Q
produces a narrower bandwidth.
Options
A. True
B. False
Show Answer
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Correct Answer: False
7. Voltage leads current by 90° in a capacitor.
Options
A. True
B. False
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Correct Answer: False
8. Voltage is measured in
Options
A. volts
B. farads
C. watts
D. ohms
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Discuss
Correct Answer: volts
9. A 0.01 µF capacitor equals how many picofarads?
Options
A. 100 pF
B. 1,000 pF
C. 10,000 pF
D. 100,000 pF
Show Answer
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Correct Answer: 10,000 pF
10. When the frequency of the voltage applied to a series
RC
circuit is increased, the phase angle
Options
A. increases
B. decreases
C. remains the same
D. becomes erratic
Show Answer
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Correct Answer: decreases
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More in Electrical Engineering:
Alternating Current and Voltage
Branch, Loop and Node Analyses
Capacitors
Circuit Theorems and Conversions
Circuit Theorems in AC Analysis
Energy and Power
Inductors
Magnetism and Electromagnetism
Ohm's Law
Parallel Circuits
Passive Filters
Quantities and Units
RC Circuits
RL Circuits
RLC Circuits and Resonance
Series Circuits
Series-Parallel Circuits
Three-Phase Systems in Power Applications
Time Response of Reactive Circuits
Transformers
Voltage, Current and Resistance