Related Questions

Why does the ionosphere of the Earth's atmosphere facilitate radio communication? i. The presence of ozone causes the reflection of radio waves to earth ii. Radio waves have a very long wavelength
A i only
B ii only
C both i & ii
D neither i nor ii
A cube has a volume of 8M3 . If each side is doubled is length, what will be its new volume ?
A 16M3
B 24M3
C 32M3
D 48M3
Two forces of magnitude 3m and 2m respectively have a resultant R. if the first force is doubled, the magnitude of the resultant is doubled.Find the angle betuween forces?
A 90°
B 120°
C 135°
D 145°
3N ও 2N মানের দুইটি বলের লদ্ধি R । প্রথম বলের মান দ্বিগুণ করলে লদ্ধির মানও দ্বিগুণ হয়। বলদ্বয়ের মধ্যবর্তী কোণের মান হবে- (The resultant of two forces 3N and 2N is R. If the first force is doubled then the resultant is also doubled. The angle between the forces is-)
A 30°
B 45°
C 65°
D 120°
If the height of a right square pyramid is increased by 12%, by what percent must the side of the base be increased, so that the volume of the pyramid is increased by 28%?
A 3%
B 7%
C 10%
D 36%
When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its "Noise..."?
A Fundamental
B Fall
C Force
D Figure
Four defensive football players are chasing the opposing wide receiver, who has the ball. Calvin is directly behind the ball carrier. Jenkins and Burton are side by side behind Calvin. Zeller is behind Jenkins and Burton. Calvin tries for the tackle but misses and falls. Burton trips. Which defensive player tackles the receiver?
A Burton
B Zeller
C Jenkins
D Calvin
Over the course of a year , a certain microbrewery increased its beer output by 70 percent, At the same time , it decreased its total working hours by 20 percent , By what percent did this factory increase its output per hour?
A 90%
B 112.5%
C 212.5%
D 50%
A radio receiver has ___________ of amplification
A One stage
B Two stages
C Three stages
D More than one stages
In a radio receiver with simple AGC
A An increase in signal strength produces more AGC
B The audio stage gain is normally controlled by the AGC
C The faster the AGC time constant the more accurate the output
D The highest AGC voltage is produced

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