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Mixed Quiz
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1A formula is a rule that relates qualities.
A)True
B)False


2A law summarizes a relationship that already exists in nature.
A)True
B)False


3A derivation is a formula produced with the use of mathematics.
A)True
B)False


4In order to avoid loading error, a bipolar junction transistor (BJT) input or analog volt-ohm-milli-ammeter (VOM) is generally used to measure a voltage.
A)True
B)False


5Norton current is sometimes called the short-circuit current.
A)True
B)False


6A Thevenin circuit can be converted to a Norton circuit.
A)True
B)False


7Coulomb’s law states that the force of attraction or repulsion between two charges is inversely proportional to the charges and directly proportional to the square of the distance between them.
A)True
B)False


8A derivation is a formula that we cannot get from other formulas.
A)True
B)False


9The second approximation of a dc voltage source does not include internal resistance.
A)True
B)False


10A dc current source produces a constant load for different load resistances.


11A is a circuit often built with solderless connections without regard to the final location of parts.


12Source resistance can be ignored when it is at least times smaller than the load resistance.


13Using the second approximation for an ac voltage source is valid only at frequencies.


14A current source has a source resistance that is at least 100 times larger than the load resistance.


15If you calculate a Thevenin resistance of 10 kΩ, you know that the Norton resistance equals .


16A poor solder connection referred to as a cold-solder joint usually means connection.


17A type of circuit trouble that appears and then disappears is known as a(n) trouble.


18The ideal approximation is sometimes called:
A)first approximation
B)second approximation
C)third approximation
D)fourth approximation


19The term stiff voltage source refers to a voltage source with a load resistance which is
A)10 times larger than the source resistance
B)100 times larger than the source resistance
C)equal to the source resistance
D)100 times smaller than the source resistance


20The most common circuit troubles are
A)faulty power supplies
B)improper design
C)broken switches
D)open and shorts


21In a circuit, voltages are usually measured with respect to
A)the positive side of the power source
B)the component known as the fuse
C)ground
D)the load


22In the troubleshooting procedure, after a component has been isolated as the top suspect,
A)replace it right away
B)unsolder or disconnect it and use test equipment for confirmation
C)replace component with a two inch piece of number 16 gauge wire
D)test component in the circuit using an ohmmeter


23Thevenin voltage is defined as the voltage across the load terminals when
A)the voltage source is removed
B)the load resistor is open
C)the load resistor is shorted
D)the voltage source is shorted


24Thevenin theorem simplifies calculations and
A)enables us to explain circuit operation
B)troubleshoots transistor circuits
C)serves as a constant current source
D)serves as a constant voltage source


25When measuring a voltage, what causes a small current to flow through the multimeter?
A)a small load resistance
B)the D’Arsenval meter movement
C)the input impedance
D)the output impedance





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