69851. An amplifier of passband 450 kHz to 460 kHz will be named as
69852. Which is not true about”Catter-all’s head-at-risk”signs in Perthe’s disease?
69853. For a 42 year old Male driver with Right hemiplegic stroke,inability to put on a dress i
69854. For broadcasting purpose, full AM signal is preferred to SSB signal because
69855. If ω is the frequency of modulating voltage in FM, the modulation index is proportional to
69856. Which camera tube has gamma of almost unity?
69857. The baud rate is
69858. ”Ischaial Weight Bearing”socket is commonly related to
69859. When satellite radio beam is aimed towards earth, it illuminates on the earth for an oval shaped area called
69860. Which of the following is invariably found in SSB?
69861. In the spectrum of a frequency modulated wave
69862. Which of the following pulse communication system is inherently immune to noise?
69863. In a PCM system, if we increase the quantization levels from 2 to 8, how do the relative bandwidth requirements vary?
69864. If the target area is small compared to wavelength of radar the situation is called
69865. If a signal band limited for fm is sampled at a rate less than 2 fm the reconstructed signal will be
69866. A better SNR can be obtained in a PCM by
69867. In stroke rehabilitation,one of the following rehabilitation measure does not use the principle of ‘Neuro Plasticity’.
69868. The type of noise that interfere very much with high frequency transmission is
69869. In communication systems, the modulating signal is also called
69870. Hue of a colour means
69871. Consider the following statements: The radar pulse must be flat topped to allow accurate range measurementallow good minimum rangeprevent frequency changes in magnetronmake the returned echoes easier to distinguish from noise. Which of the above are correct?
69872. Filter method and phasing method are the methods for generating
69873. In amplitude modulation
69874. Which one the following is an advantage of AM over FM?
69875. Some multiplexing arrangements for telephone system are Space multiplexingTime division multiplexingFrequency division multiplexing Which of the above allow transmission of many independent signals over a single channel?
69876. Industrial noise has the frequency range of
69877. Thermal noise Power is
69878. The characteristic impedance of coaxial cable is about
69879. The diameter and thickness of CD are
69880. Consider the following statements about advantages of phase discriminator over slope detector Fewer tuned circuitsGreater limitingBetter linearityEasy alignment Which of the above are true?
69881. In a superheterodyne radio receiver
69882. The assigned carrier frequency of an FM broadcast station is 96.3 MHz. Its FM signal has a centre frequency of
69883. Digital television is also called
69884. The number of spectral component of a cosine wave is
69885. At FM demodulator output noise power density
69886. According to CCIR standards, the Vestigial Sideband (VSB)
69887. Line of sight transmission is used in
69888. A typical value of insertion loss of SAW filter is
69889. In phase modulation, the phase deviation is
69890. In the human eye, an image persists for a time of about
69891. The different channels in a TDM receiver are separated by
69892. In a pulsed RADAR typical value of pulse duration and pulse frequency respectively are
69893. In a hi-fi system the nonlinear distortion should be less than
69894. A pure tone at 1000 Hz has a dB level of 50 dB. If two such tones exist simultaneously the dB level is about
69895. The HV and other voltage supplies for a TV receiver are obtained from IHVT. The full name for this device is
69896. The main systems used for generation of SSB are
69897. An antenna operates effectively when its dimensions are
69898. The mobile unit of a mobile telephone is generally in
69899. Assertion (A): Water waves are longitudinal but EM waves are transverseReason (R): In an EM wave electric field, magnetic field and propagation are mutually perpendicular.
69900. In a wave the electric field lines are vertical. Then the wave is
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