Night Owl 6/Night Owl's Shareware - PDSI-006 - Night Owl Corp (1990).iso/035a/tec20.zip/TEC6.DAT

Text File | 1991-11-20 | 14KB | 338 lines

185E-3-1.1 C 3-15  The term used to describe the ability|of a component to store energy in a  |magnetic field is inductance
What is the term used to describe the ability of a component
to store energy in a magnetic field?
A. Admittance
B. Capacitance
C. Inductance
D. Resistance
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186E-3-2.1 C 3-16  The basic unit of inductance|is the Henry
What is the basic unit of inductance?
A. Coulomb
B. Farad
C. Henry
D. Ohm
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187E-3-2.2 C 3-16  The basic unit of inductance|is the Henry
What is a henry?
A. The basic unit of admittance
B. The basic unit of capacitance
C. The basic unit of inductance
D. The basic unit of resistance
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188E-3-2.3 B 3-16  A microhenry is one millionth of a  |Henry and is sometimes written as µH
What is a microhenry?
A. A basic unit of inductance equal to 10-12 henrys
B. A basic unit of inductance equal to 10-6 henrys
C. A basic unit of inductance equal to l0-3 henrys
D. A basic unit of inductance equal to 10+6 henrys
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189E-3-2.4 C 3-16  One thousandth of a Henry
What is a millihenry?
A. A basic unit of inductance equal to 10-12 henrys
B. A basic unit of inductance equal to 10-6 henrys
C. A basic unit of inductance equal to 10-3 henrys
D. A basic unit of inductance equal to 10+6 henrys
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190E-3-3.1 B 3-16  Inductances add directly if|not coupled,  Lt = L1 + L2
Two equal-value inductors are connected in series.  How does
the total inductance of this combination compare with the
value of either inductor by itself?
A. The total inductance is half the value of either inductor
B. The total inductance is twice the value of either inductor
C. The total inductance is equal to the value of either
   inductor
D. No comparison can be made without knowing the exact
   inductances
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191E-3-3.2 C 3-16  Inductances add directly if not|coupled,  Lt = L1 + L2 + L3...
How does the total inductance of a string of series-connected
inductors compare to the values of the individual inductors?
A. The total inductance is equal to the average of all the
   individual inductances
B. The total inductance is equal to less than the value of the
   smallest inductance
C. The total inductance is equal to the sum of all the individual
   inductances
D. No comparison can be made without knowing the exact
   inductances
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192E-3-4.1 A 3-16  If not coupled,  then inductors in|parallel combine like resistors in|parallel, ie. half the inductance
Two equal-value inductors are connected in parallel.  How does
the total inductance of this combination compare with the value
of either inductor by itself?
A. The total inductance is half the value of either inductor
B. The total inductance is twice the value of either inductor
C. The total inductance is equal to the square of either
   inductance
D. No comparison can be made without knowing the exact
   inductances
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193E-3-4.2 B 3-16  Less than the smallest inductance|1/Lt = 1/L1 + 1/L2 + 1/L3...
How does the total inductance of a string of parallel-connected
inductors compare to the values of the individual inductors?
A. The total inductance is equal to the sum of the inductances
   in the combination
B. The total inductance is less than the smallest inductance
   value in the combination
C. The total inductance is equal to the average of the
   inductances in the combination
D. No comparison can be made without knowing the exact
   inductances
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194E-4-1.1 A 3-16  The term used to describe the ability|of a component to store energy in an |electric field is capacitance
What is the term used to describe the ability of a component
to store energy in an electric field?
A. Capacitance
B. Inductance
C. Resistance
D. Tolerance
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195E-4-2.1 A 3-16  The basic unit of capacitance|is the Farad
What is the basic unit of capacitance?
A. Farad
B. Ohm
C. Volt
D. Ampere
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196E-4-2.2 B 3-16  A microfarad is one millionth of a  |Farad and is sometimes written as µF
What is a microfarad?
A. A basic unit of capacitance equal to 10-12 farads
B. A basic unit of capacitance equal to 10-6 farads
C. A basic unit of capacitance equal to 10-2 farads
D. A basic unit of capacitance equal to 10+6 farads
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197E-4-2.3 A 3-16  One millionth millionth of a Farad
What is a picofarad?
A. A basic unit of capacitance equal to 10-12 farads
B. A basic unit of capacitance equal to 10-6 farads
C. A basic unit of capacitance equal to 10-2 farads
D. A basic unit of capacitance equal to 10+6 farads
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198E-4-2.4 B 3-16  The basic unit of capacitance|is the Farad
What is a farad?
A. The basic unit of resistance
B. The basic unit of capacitance
C. The basic unit of inductance
D. The basic unit of admittance
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199E-4-3.1 C 3-17  1/Ct = 1/C1 + 1/C2    or|Ct = (C1*C2)/(C1+C2). If|C1 = C2  then  Ct = C1/2
Two equal-value capacitors are connected in series.   How does
the total capacitance of this combination compare with the value
of either capacitor by itself?
A. The total capacitance is twice the value of either capacitor
B. The total capacitance is equal to the value of either capacitor
C. The total capacitance is half the value of either capacitor
D. No comparison can be made without knowing the exact
   capacitances
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200E-4-3.2 B 3-17  Less than the smallest value|1/Ct = 1/C1 + 1/C2 + 1/C3...
How does the total capacitance of a string of series-connected
capacitors compare to the values of the individual capacitors?
A. The total capacitance is equal to the sum of the capacitances
   in the combination
B. The total capacitance is less than the smallest value of
   capacitance in the combination
C. The total capacitance is equal to the average of the
   capacitances in the combination
D. No comparison can be made without knowing the exact
   capacitances
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201E-4-4.1 A 3-17  Capacitors in parallel add directly|Ct = C1 + C2 + C3...  For two equal|value caps,  Ct = 2*C1 or Ct = 2*C2
Two equal-value capacitors are connected in parallel.  How does
the total capacitance of this combination compare with the value
of either capacitor by itself?
A. The total capacitance is twice the value of either capacitor
B. The total capacitance is half the value of either capacitor
C. The total capacitance is equal to the value of either capacitor
D. No comparison can be made without knowing the exact
   capacitances
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202E-4-4.2 A 3-17  Capacitors in parallel add directly|Ct = C1 + C2 + C3...
How does the total capacitance of a string of parallel-connected
capacitors compare to the values of the individual capacitors?
A. The total capacitance is equal to the sum of the capacitances
   in the combination
B. The total capacitance is less than the smallest value of
   capacitance in the combination
C. The total capacitance is equal to the average of the
   capacitances in the combination
D. No comparison can be made without knowing the exact
   capacitances
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203F-1-1.1 B 4-7   Composition, film, metal-film|and wire-wound for high power
What are the four common types of resistor construction?
A. Carbon-film, metal-film, micro-film and wire-film
B. Carbon-composition, carbon-film, metal-film and wire-wound
C. Carbon-composition, carbon-film, electrolytic and metal-film
D. Carbon-film, ferrite, carbon-composition and metal-film
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204F-1-2.1 D 4-7   A resistor opposes(resists) the |flow of current in a circuit and|will limit the current
What is the primary function of a resistor?
A. To store an electric charge
B. To store a magnetic field
C. To match a high-impedance source to a low-impedance
   load
D. To limit the current in an electric circuit
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205F-1-2.2 C 4-9   A variable resistor is a resistor |with a slide or contact that makes|the resistance adjustable
What is a variable resistor?
A. A resistor that changes value when an ac voltage
   is applied to it
B. A device that can transform a variable voltage
   into a constant voltage
C. A resistor with a slide or contact that makes the
   resistance adjustable
D. A resistor that changes value when it is heated
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206F-1-3.1 A 4-9   The color bands are the color code|Value as digit, digit, multiplier |Fourth band is tolerance
What do the first three color bands on a resistor indicate?
A. The value of the resistor in ohms
B. The resistance tolerance in percent
C. The power rating in watts
D. The value of the resistor in henrys
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207F-1-3.2 B 4-9   The color bands are the color code|Value as digit, digit, multiplier |Fourth band is tolerance
How can a carbon resistor's electrical tolerance rating
 be found?
A. By using a wavemeter
B. By using the resistor's color code
C. By using Thevenin's theorem for resistors
D. By using the Baudot code
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208F-1-3.3 B 4-10  Value as digit, digit, multiplier|Fourth band is tolerance
What does the fourth color band on a resistor indicate?
A. The value of the resistor in ohms
B. The resistance tolerance in percent
C. The power rating in watts
D. The resistor composition
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209F-1-3.4 C 4-9   The fourth band is the tolerance of|the resistor and by using that band|nearly equal values can be selected
When the color bands on a group of resistors indicate that
they all have the same resistance, what further information
about each resistor is needed in order to select those that
have nearly equal value?
A. The working voltage rating of each resistor
B. The composition of each resistor
C. The tolerance of each resistor
D. The current rating of each resistor
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210F-1-4.1 A 4-10  The energy of the moving electrons is|imparted to the atoms in the resistor|and converted to heat energy
Why do resistors generate heat?
A. They convert electrical energy to heat energy
B. They exhibit reactance
C. Because of skin effect
D. To produce thermionic emission
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211F-1-4.2 C 4-10  A large size resistor usually|will handle more power than a|small resistor
Why would a large size resistor be substituted for a smaller
one of the same resistance?
A. To obtain better response
B. To obtain a higher current gain
C. To increase power dissipation capability
D. To produce a greater parallel impedance
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212F-1-5.1 B 4-2   It is not A, that is an inductor
What is the symbol used to represent a fixed resistor on
 schematic diagrams?
|
         ┌─┬─┬─┬─┬─┬─┬─┐
    A.   │ │ │ │ │ │ │ │       B.   ──/\/\/\/\/\/\──

                                           ┌
    C.       ──┤├──            D.       ──│──
                                           └
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213F-1-5.2 C 4-2   It is not B, that is a|variable capacitor
What is the symbol used to represent a variable resistor on
 schematic diagrams?
|
                    ─┐
         ┌─┬─┬─┬─┬─/─┬─┐                 \
    A.   │ │ │ │ / │ │ │       B.       ──┤├──
               /                            \
                                             ─┘
                    ─┐
                   /
    C.   ──/\/\/\/\/\/\──      D.   ──/\/\/\/\/\/\──
               /                            
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214F-2-1.1 D 4-10  Core means central part
What is an inductor core?
A. The point at which an inductor is tapped to produce
   resonance
B. A tight coil of wire used in a transformer
C. An insulating material placed between the plates of
   an inductor
D. The central portion of a coil; may be made from air,
   iron, brass or other material
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215F-2-1.2 A 4-10  Wire and core material
What are the component parts of a coil?
A. The wire in the winding and the core material
B. Two conductive plates and an insulating material
C. Two or more layers of silicon material
D. A donut-shaped iron core and a layer of insulating tape
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216F-2-1.3 D 4-10  An inductor is a piece of wire,|usually formed into a coil
Describe an inductor?
A. A semiconductor in a conducting shield
B. Two parallel conducting plates
C. A straight wire conductor mounted inside a Faraday shield
D. A coil of conducting wire
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217F-2-1.4 C 4-10  Inductors with air cores have|less loss than inductors with|other core materials
For radio frequency power applications, which type of inductor
has the least amount of loss?
A. Magnetic wire
B. Iron core
C. Air core
D. Slug tuned
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218F-2-2.1 D 4-10  An inductor is a piece of wire,  |usually formed into a coil that  |stores energy in a magnetic field
What is an inductor?
A. An electronic component that stores energy in
   an electric field
B. An electronic component that converts a high
   voltage to a lower voltage
C. An electronic component that opposes dc while
   allowing ac to pass
D. An electronic component that stores energy in
   a magnetic field
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219F-2-2.2 C 4-10  An inductor stores energy in|an electromagnetic field and|opposes a change in current
What are the electrical properties of an inductor?
A. An inductor stores a charge electrostatically and
   opposes a change in voltage
B. An inductor stores a charge electrochemically and
   opposes a change in current
C. An inductor stores a charge electromagnetically and
   opposes a change in current
D. An inductor stores a charge electromechanically and
   opposes a change in voltage
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220F-2-3.1 D 4-10  The four major factors are the core|material, and the diameter, length,|and the number of turns of the coil
What factors determine the amount of inductance in a coil?
A. The type of material used in the core, the diameter of the core
   and whether the coil is mounted horizontally or vertically
B. The diameter of the core, the number of turns of wire used
   to wind the coil and the type of metal used in the wire
C. The type of material used in the core, the number of turns
   used to wind the core and the frequency of the current
   through the coil
D. The type of material used in the core, the diameter of the
   core, the length of the coil and the number of turns of wire
   used to wind the coil
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221F-2-3.2 B 4-10  Change the core to iron
What can be done to raise the inductance of a 5-microhenry
air-core coil to a 5-millihenry coil with the same physical
dimensions?
A. The coil can be wound on a non-conducting tube
B. The coil can be wound on an iron core
C. Both ends of the coil can be brought around to form the
   shape of a donut, or toroid
D. The coil can be made of a heavier-gauge wire
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