ECE QUIZ :1

Online Examination for ECE Quiz Question And Answer

Online Test

1. In a parallel RLC circuit, which value may always be used as a vector reference?

current
reactance
resistance
voltage
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2. Another name for a unity gain amplifier is

difference amplifier
comparator
single ended
voltage follower
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3. If doubling the voltage across a resistor doubles the current through the resistor then

the resistor value decreased
the resistor value did not change
the resistor value increased
it is impossible to determine the change in the resistor value
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4. What is the true power of a 24 Vac parallel RL circuit when R = 45 omega.gif and XL = 1100 omega.gif?

313.45 W
12.8 W
44.96 W
22.3 W
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5. In a repetitive-pulse RC integrator circuit, what would the steady-state voltage equal at the end of the fifth pulse? Assume a Vin of 20 V.

1.46 V
14.62 V
20 V
0 V
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6. A zero-level detector is a

comparator with a sine-wave output
comparator with a trip point referenced to zero
peak detector
limiter
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7. The resistive change of a strain gauge

is based on the weight placed upon it, but can be many thousands of ohms
is usually no more than 100 omega.gif
based on the gauge factor but is typically less than an ohm
has a positive temperature coefficient
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8. The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's

amplitude
frequency
wavelength
period
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9. Three different Q points are shown on a dc load line. The upper Q point represents the:

minimum current gain
intermediate current gain
maximum current gain
cutoff point
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10. What does a hall effect sensor sense?

temperature
moisture
magnetic fields
pressure
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Score =
Correct answers: