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E5 AMATEUR EXTRA Class with Q #'s 20-24 Questions With Complete Solutions
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E5 AMATEUR EXTRA Class with Q #'s 20-24 Questions With Complete Solutions
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E5 AMATEUR EXTRA Class with Q #'s 20-24 QuestionsWith Complete Solutions
5A1 What can cause the voltage across reactances in series to be
larger than the voltage applied to them?
A.
Resonance
B.
Capacitance
C.
Conductance
D.
Resistance Correct Answers A.
HH HH
Resonance
A2 What is resonance in an LC or RLC Circuit?
A.
The highest frequency that will pass current
B.
The lowest frequency that will pass current
C.
The frequency at which the capacitive reactance equals the
inductive reactance
D.
The frequency at which the reactive impedance equals the
resistive impedance Correct Answers C.
HH HH
The frequency at which the capacitive reactance equals the
inductive reactance
,A3 What is the magnitude of the impedance of a series RLC
circuit at resonance?
A.
High, as compared to the circuit resistance
B.
Approximately equal to capacitive reactance
C.
Approximately equal to inductive reactance
D.
Approximately equal to circuit resistance Correct Answers D.
HH HH
Approximately equal to circuit resistance
A4 What is the magnitude of the impedance of a parallel RCL
circuit at resonance?
A.
Approximately equal to circuit resistance
B.
Approximately equal to inductive reactance
C.
Low, as compared to the circuit resistance
D.
Approximately equal to capacitive reactance Correct Answers
HH
A.
HH
Approximately equal to circuit resistance
A5 What is the result of increasing the Q of an impedance
matching circuit?
A. Matching bandwidth is decreased
, B. Matching bandwidth is increased
C. Matching range is increased
D. It has no effect on the impedance matching Correct Answers
HH
A. Matching bandwidth is decreased
HH
A6 What is the magnitude of the circulating current within the
components of a parallel LC circuit at resonance?
A.
It is at a minimum
B.
It is at a maximum
C.
It equals 1 divided by the quantity 2 times Pi, multiplied by the
square root of inductance L multiplied by capacitance
D.
It equals 2 multiplied by Pi, multiplied by frequency, multiplied
by inductance Correct Answers B.
HH HH
It is at a maximum
A7 What is the magnitude of the current at the input of a parallel
RLC circuit at resonance?
A.
Minimum
B.
Maximum
C.
R/L
D.
L/R Correct Answers A.
HH HH
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