Q. The antenna diameter of a radar system is doubled. The maximum range will

View solution

Q. Which of the following microphones works on the piezoelectric effect?

View solution

Q. In PAL system weighting of R - Y and B - Y signals is done to

View solution

Q. In case of probability of the message is 1 to 16 then the information will be

View solution

Q. The saving of power in DSB-SC modulated at 80% is

View solution

Q. In a perfect conductor the resistor noise is

View solution

Q. An RF carrier of 12 kV at 1 MHz is amplitude modulated by 1 kHz signal having peak value of 6 kV. The modulation pattern is seen on CRO screen. The voltage indicated will be

View solution

Q. In push pull amplifier, each transistor conducts for

View solution

Q. In the television system in India, each channel is allowed a bandwidth of

View solution

Q. A diode detector load consists of 0.01 μF capacitor in parallel with a 5 k ohms resistor. The maximum depth of modulation without diagonal clipping at modulating frequency of 1000 Hz and 10 kHz is

View solution

Q. In the television system in India, each frame is scanned

View solution

Q. Each kilometer of travel in electromagnetic radiation means a time delay of

View solution

Q. A video monitor is exactly similar to TV receiver.

View solution

Q. A RADAR can be used to

View solution

Q. In single tone AM modulation, the transmission efficiency for m = 1 is

View solution

Q. A remote control of TV uses a 10 bit word. The maximum number of total commands it can transmit is

View solution

Q. Telecine equipment in a TV studio consists of

View solution

Q. TV signal strength when expressed in dB m has the reference of

View solution

Q. A sinusoidal voltage amplitude modulates a carrier of peak value 5 kV. Each side band has an amplitude of 500 V. The modulation index is

View solution

Q. Kell factor is about

View solution