Related Questions

The lower and upper cut off frequencies are also called ___________ frequencies
A Sideband
B Resonant
C Half-resonant
D Half-power
A band-stop filter passes frequencies between its lower and upper critical frequencies and rejects all others.
A True
B False
Frequencies above ___________ kHz are called radio frequencies
A 2
B 10
C 50
D 200
What frequency range is used for microwave communications, satellite and radar?
A Low Frequency : 30 kHz to 300 kHz
B Medium Frequency : 300 kHz to 3 MHz
C Super High Frequency : 3000 MHz to 30000 MHz
D Extremely High Frequency :30,000 MHz
E None of the above
What frequency range is used for TV transmission and low power microwave applications?
A Very Low Frequency : 3 kHz to 30 kHz
B Medium Frequency : 300 kHz to 3 MHz
C Ultra High Frequency : 300 MHz to 3000 MHz
D Super High Frequency : 3000 MHz to 30000 MHz
E None of the above
What is the range of frequencies of sound waves audible to human beings?
A 16kHz to 200kHz
B 16Hz to 16kHz
C 16Hz to 20kHz
D 14Hz to 20kHz
The Zaskar range, the Ladakh range, the Kailas and the Karakoram Range are the main ranges of:
A The Western Ghat
B The Aravali
C The Himalayan system
D The Eastern Ghat
Trommels are revolving screens which normally operate in the range of __________ rpm.
A 1 - 2
B 15 - 20
C 40 - 50
D 60 - 75
Frame thickness in the plate and frame filter press is normally in the range of __________ inches.
A 0.25 to 4
B 0.25 to 8
C 1 to 5
D 1 to 12
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.
A 4-8
B 17-34
C 52-68
D 88-105

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