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Prince Second
Subject: Physics
, asked on 28/1/18
What are the uses of sky wave propogation ?
I don't expect any links from your side, as I had searched already regarding the question i am asking today.
Answer
1
Aashish Rohilla
Subject: Physics
, asked on 26/1/18
A message signal of frequency 20 KHz and peak voltage of 20 volts is used to modulate a carrier signal of frequency 2 MHz and peak voltage of 40 volts. Determine (i) modulation index, (ii) the side bands produced. Draw the corresponding frequency spectrum of amplitude modulated signal.
Answer
1
Dipesh Malhotra
Subject: Physics
, asked on 14/1/18
Q.24. Which mode of wave propagation is suitable for television broadcast and satellite communication and why? Draw a suitable diagram depicting this mode of propagation of wave.
Answer
1
Ishita Pati
Subject: Physics
, asked on 13/1/18
Which basic mode of communication is used in satellite communication?
Answer
2
Sandra Saju
Subject: Physics
, asked on 12/1/18
What is ground wave communication? Explain why this mode cannot be used for long distance communication using high frequencies .
Answer
1
Sandra Saju
Subject: Physics
, asked on 12/1/18
A TV tower has a has a height of 300m. What is the maximum distance up to which this TV transmission can be received ?
Answer
1
Prerna Varshney
Subject: Physics
, asked on 12/1/18
why we need to increase the power radiated in space?
Answer
1
Aditya Jayaprakash
Subject: Physics
, asked on 8/1/18
Q. A galvanometer gives full scale deflection with 6mA current. By connecting it to a 4990
Ω
resistance, it can be converted into a voltmeter of range 0 -30 V. Explain how you convert the same galvanometer to an ammeter of range 0- 1.5 A.
Q. A TV tower of height of 75m is situated on the top of a hill. If the average population density around the tower is 1000/km2, calculate the population covered by the TV broadcast. Height of the hill from the ground level is 25m.
Answer
1
Abhishek
Subject: Physics
, asked on 3/1/18
What are uses of receiver??
Answer
1
Aashish Rohilla
Subject: Physics
, asked on 2/1/18
find out range of transmission of a transmitting antenna on the surface of the earth.
Answer
1
Tarul Jhalani
Subject: Physics
, asked on 22/12/17
Explain this question in detail
Q.43. In the given figure, a uniform rod of mass m and length l is hinged at one end. Find the work done by applied force in slowly bringing the rod to the inclined position.
Answer
1
Prerna Varshney
Subject: Physics
, asked on 15/12/17
power amplifier , increase the amplitude of signal , then the information send should be changed but it is not , why the information is no changed while increasing the amplitude?
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 25/11/17
5. Ionosphere is a reflective medium for radio waves'— discuss.
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 25/11/17
Q. Why is data signal not suitable for direct long distance communication?
Answer
1
Shubhrajyoti Ghosh
Subject: Physics
, asked on 25/11/17
6. What are the main features of propagation of radio waves through ionosphere?
Answer
1
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I don't expect any links from your side, as I had searched already regarding the question i am asking today.
Q. A TV tower of height of 75m is situated on the top of a hill. If the average population density around the tower is 1000/km2, calculate the population covered by the TV broadcast. Height of the hill from the ground level is 25m.
Q.43. In the given figure, a uniform rod of mass m and length l is hinged at one end. Find the work done by applied force in slowly bringing the rod to the inclined position.