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CPL Test Series
Question Bank
Questions for RADIO WAVES
Answer the following questions
Test Mode
Training Mode
1. Which frequency band is a wavelength of 1200 m?
UHF
MF
LF
HF
2. The wavelength corresponding to a frequency of 15 625 MHz is
1.92 cm
19.2 m
19.2 cm
1.92 m
3. The frequency band containing the frequency corresponding to 29.1 cm is
SHF
HF
VHF
UHF
4. A radio wave is
an energy wave comprising an electrical field in the same plane as a magnetic field
an electrical field alternating with a magnetic field
an energy wave where there is an electrical field perpendicular to a magnetic field
an energy field with an electrical component
5. The frequency which corresponds to a wavelength of 6.98 cm is
42.98 GHz
429.8 GHz
4.298 GHz
4298 GHz
6. If the wavelength of a radio wave is 3.75 metres, the frequency is
80 kHz
8 MHz
80 MHz
800 kHz
7. The wavelength corresponding to a frequency of 125 MHz is
24 mm
24 m
2.4 m
24 cm
8. The plane of polarisation of an electromagnetic wave is
the plane of the electrical or magnetic field dependent on the plane of the aerial
the plane of the magnetic field
none of the above
the plane of the electrical field
9. The speed of radio waves is
300 million metres per second
300 km per second
162 nm per second
162 million nm per second
10. The phase of the reference wave is 110° as the phase of the variable wave is 315°. What is the phase difference?
155°
025°
205°
335°
11. To carry out a phase comparison between two electromagnetic waves
both waves must have the same frequency
both waves must have the same amplitude
both waves must have the same amplitude and frequency
both waves must have the same phase
12.
Determine the approximate phase difference between the reference wave and the variable wave:
225°
135°
315°
045°
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