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WorksheetsRadio Frequency design
Total questions: 25
Worksheet time: 13mins
Light year is a measurement of
Speed of light
Speed of rockets
Stellar distances
Speed of aeroplanes
What frequency range is generally referred to as the UHF (Ultra High Frequency)?
3 kHz - 30 MHz
30 MHz - 300 MHz
300 MHz - 3 GHz
3 GHz - 30 GHz
Which part of RF circuit is responsible for encoding and decoding signals?
Low Noise Amplifier
Demodulator
Power Amplifier
Display Screen
What is the role of a mixer in a radio frequency design?
To amplify the signal
To filter out unwanted frequencies
To convert the frequency of the signal
To decode the signal
Passive components exhibit
LC active network
Ideal frequency response
Inductors external to IC package
Nonideal frequency response
The incident and reflected waves are related to each other through a transmission line parameter called
Reflection coefficient
Reflection Current
Standing waves
Incident current
The ratio of the maximum to minimum magnitudes of voltage or current on a line having standing waves is called
Standing wave ratio
Smooth line
Reflection Coefficient
surge impedance
The loop resistance per unit length of the transmission line is
Capacitance
Inductance
Resistance
Conductance
The primary constants of a transmission line
Resistance
Propagation constant
Characteristic impedance
Current is flowing essentially on the surface of the conductor in a skin of very small depth.
Capacitance
skin effect
Conductance
Inductance
Which circuit is used to replace inductor in IC components?
PN-junction diode
RC active network
LC active network
None of the above
What is the phenomenon called when the radio frequency signal travels along the surface of the wire rather than through it?
Surface effect
Shell effect
Skin effect
Shade effect
At high frequencies, resistors behave as
Only Series inductors
only Series Conductor
Both Series Inductor and Parallel Capacitor
Only parallel Capacitor
The component which cannot generate increase in power is said to be
Active
Passive
Digital
None of these
What is the process of converting one form of energy into radio waves called?
Demodulation
Modulation
Amplification
Attenuation
Which component is used to store energy in an electric field in a radio frequency design?
Capacitor
Resistor
Inductor
Transistor
What is the purpose of an antenna in a radio frequency design?
To convert electrical energy into light
To convert radio waves into sound waves
To convert electrical energy into radio waves
To convert radio waves into heat
Transmission line analysis is used when?
The length of the transmission line is long
The frequency of operation is low
None of the above
In general, a line is considered as a transmission line if its length exceeds how many wavelength?
1/8
1/4
1/16
1/2
A transmission line can be used as a resonant circuit.
YES
NO
Which is not an Application of Transmission Lines?
Pulse generator
Tuned circuits
Phase delay
Impedance Matching
The unit of attenuation constant is
Neper
Bel
Decibel
None
A network which is used to match the load impedance with source impedance is called---
Unmatching Network
Balanced Network
Matching network
Impedance matching is achieved when load impedance---- to input impedance
proportional
In Equal
Equal
None of these
Impedance matching device between the source and load to achieve impedance matching is called
Stub
load
section
