In each blank, try to type in the
word that is missing. If you've
typed in the correct word, the
blank will turn green.
If your not sure what answer should be entered, press the space bar and the next missing letter will be displayed. When you are all done, you should look back over all your answers and review the ones in red. These ones in red are the ones which you needed help on. Question: How does the input impedance of a -effect transistor compare with that of a bipolar transistor? Answer: An FET has high input impedance; a bipolar transistor has low input . Question: The product of the readings of an AC voltmeter and AC is called: Answer: power. Question: Good conductors with resistance have what type of electrons? Answer: Many free . Question: Permeability is as: Answer: The ratio of flux density in a substance to the magnetizing force that produces it. Question: How would you calculate the total capacitance of capacitors in parallel? Answer: CT = C1 + C2 + C3. Question: When currents produce expanding magnetic fields around conductors in a direction that opposes the original magnetic field, this is known as: Answer: law. Question: How might you reduce the inductance of an coil? Answer: the number of turns. Question: What the maximum forward current in a junction diode? Answer: The temperature. Question: An AC ammeter : Answer: (RMS) values of current. Question: By what factor must the voltage of an AC circuit, as on the scale of an AC voltmeter, be multiplied to obtain the peak voltage value? Answer: 1.414 Question: of the following groups is correct for listing common materials in order of descending conductivity? Answer: Silver, copper, , iron, and lead. Question: What will produce a field? Answer: A flowing through a conductor. Question: the cross-sectional area of a conductor will:Answer: Double the . Question: What is the dielectric constant for air?Answer: Question: What are the two most commonly-used specifications for a diode? Answer: Maximum forward current and PIV (peak inverse ). Question: What type of wave is characterized by a rise time significantly than the fall time (or vice versa)? Answer: wave. Question: What is the description of a wave? Answer: A wave that changes back and forth between two voltage levels and stays at these levels for equal amounts of time. Question: of the 4 groups of metals listed below are the best low-resistance conductors? Answer: Gold, silver, and . Question: What formula calculate the total inductance of inductors in series? Answer: LT = L1 + L2 Question: Skin is the phenomenon where: Answer: RF current flows in a thin of the conductor, closer to the surface, as frequency increases. Question: What is the purpose of a bypass ? Answer: It removes alternating current by providing a low impedance path to . Question: What is the peak voltage at a common household outlet? Answer: 165.5 . Question: What type of wave is made up of sine of the fundamental frequency and all the odd harmonics? Answer: . Question: What is the term used to express the of electrical energy stored in an electrostatic field? Answer: Joules Question: What formula would determine the inductive reactance of a coil if frequency and coil are known? Answer: XL = 2πf L Question: What are the two types of junction field-effect transistors?Answer: N-channel and P-channel. Question: What is the basic unit of power? Answer: Watt. Question: What is the term used to an AC voltage that would cause the same heating in a resistor as a corresponding value of DC voltage? Answer: Root mean (RMS). Question: Which of these will be most useful for at UHF frequencies?Answer: Mica. Question: What device is used to electrical energy in an electrostatic field? Answer: Capacitor. Question: What is the RMS at a common household electrical power outlet? Answer: 117-V AC. Question: What type of wave is made up of sine at the fundamental frequency and all the harmonics? Answer: wave. Question: What determines the strength of the magnetic field around a ? Answer: The of current. Question: How do you compute true power (power dissipated in the circuit) in a circuit where AC voltage and current are out of ? qAnswer: apparent power times the power factor. Question: By what factor must the voltage measured in an AC circuit, as indicated on the scale of an AC , be multiplied to obtain the average voltage value? Answer: 0.9 Question: What is a sine wave? Answer: A wave amplitude at any given instant can be represented by the projection of a point on a wheel rotating at a uniform speed. Question: MOSFETs are manufactured with THIS protective device built into their gate to the device from static charges and excessive voltages: Answer: diode. Question: What happens to reactive power in a circuit that has both and capacitors? Answer: It alternates between magnetic and fields and is not dissipated. Question: What is meant by the term EMF”?Answer: A that opposes the applied EMF. Question: What is the term for the out-of-phase power associated with and capacitors? Answer: power. Question: Which metal object may be least affected by galvanic corrosion when in seawater? Answer: steel propeller shaft. Question: How many degrees are there in one sine wave cycle? Answer: 360 . Question: What metal is usually employed as a anode for corrosion control purposes? Answer: Zinc bar. Question: What is the easiest voltage amplitude to measure by a pure sine wave signal on an oscilloscope? Answer: Peak-to-peak. Question: Assuming a power source to have a fixed of internal resistance, maximum power will be transferred to the load when: Answer: The load equals the internal impedance of the source. Question: The opposition to the creation of magnetic lines of force in a circuit is known as: Answer: . Question: Corrosion resulting from current flow between dissimilar metals is called: Answer: Galvanic . Question: A common amplifier has: Answer: More voltage gain than a collector. |
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
bjthomp2005
Popular Standardized Tests sets