Electronics Pb
of 2
Transcript of Electronics Pb
-
7/27/2019 Electronics Pb
1/2
-
7/27/2019 Electronics Pb
2/2
energy
What is the measuring instrument that uses the force of repulsion between fixed andmovable magnetized iron vanes or the force between a coil and a pivoted vane shapedpiece of soft iron to move the indicating pointer
Vane-type instrument
RF field strength meters expresses the filed strength as power density from 0.001 to 2000microwatts/cm2
The thickness of the trace is approximately 5% of one vertical divi
Unit of energy Joule
If three amplifiers with a gain of 8 each are in cascade, how much is the overall gain? 512
A non-inverting amplifier has a 150- Rf and a 15- Ri. How much is its closed-loopvoltage gain?
11
Which of the following filter(s) can be used as ammeter? Magnetic effectThermal effectElectro-magnetic induct
The waveform under investigation is displayed on the screen which is protected with acalibrated flat hard piece of plastic called
Graticule
The measurement accuracy of the time base becomes ___ when the time base is set to itsmaximum position.
+/- 7%
A BJT has 3 semiconductor layers
An output control The output signal has a larger power, current, or voltage than itsinput Amplification
An AC bridge that measures unknown capacitance and losses. Maxwell-Wein
An AC bridge that measures capacitance and dissipation factor. Schering
Dimension of a MOSFET in a single IC chip 1.5 mils x 3 mils
Advantage of shunt regulation Built-in short-circuitprotection
Hot bearings in a dc motor caused by Poor ventilation
Portion of weld interval where current is flowing Heat subinterval
A method of analyzing circuits with multiple sources in which each one is considered
one at a time then the results are combined afterwards.
Superposition
An instrument used to measure brain activity using magnetic detectors. Magnetoencephalogram
Logic table displaying various input combinations and output Truth Table
