69601. Which of the following statement regarding single-sideband (SSB) transmission is not correct?
69602. For demodulating PCM; it is first converted into
69603. One of the advantages of base modulation over collector modulation in a class C transistor amplifier is
69604. In an AM transmitter after the modulation stage, class C amplifier
69605. The maximum number of AM broadcast stations that can be accommodated in a 100 kHz bandwidth for the highest modulating frequency of 5 kHz will be
69606. For a short dipole having an effective length less than half the wavelength the radiation resistance is
69607. In a low level amplitude modulated system, the amplifier modulated stage must be
69608. A noise can be represented as superposition of spectral components. When this noise is passed through a narrow band filter, the output of filter should look like
69609. A narrow band noise show
69610. The upper and lower side frequencies for 3 kHz audio modulation with a 27 MHz carrier frequency will be
69611. Consider the following advantages of phase array radar simple circuitryability to track and scan simultaneouslyability to track many targets togethervery fast scanning Which of the above are correct?
69612. The modulation index of a narrowband FM signal is
69613. Which is a digital coding technique?
69614. Which of the following noise sources is different from others?
69615. For the transmission of normal speech, the PCM channel needs a bandwidth of __________ kHz.
69616. In VHS format width of audio track is
69617. In a plate modulated class C amplifier, the peak supply voltage is V. The maximum plate-cathode voltage can be
69618. In a single sideband suppressed carrier AM system, the modulation index is changed from 0 to 1, the power content of the signal
69619. Neper is
69620. A p matching network for coupling the transmitter output of the antenna is shown in figure. In this C2 should be tuned for
69621. Which of following digital modulation technique?
69622. A discrete zero memory information source has 40 symbols and each symbol is equally likely. The minimum number of bits required to code the source with uniform length code and entropy of the source are
69623. The standard intermediate frequency for FM ratio is
69624. In an end fire array, the radiation pattern
69625. Armstrong FM transmitter uses
69626. An antenna having a length of and grounded at one end is called
69627. The noise figure of individual stages of a two stage amplifier is 2.03 and 1.54 respectively. If gain of first stage is 62, the overall noise figure is
69628. In figure (A) and (B)
69629. A trinitron colour picture tube uses
69630. For a three stage cascaded amplifier, having gains of G1, G2 and G3 and noise figures of F1, F2, F3 the overall noise figure
69631. Consider the following statements as regards DPSK and DEPSK DPSK demodulator requires a device which operates at carrier frequency and provides a delay of bit time TbIn DPSK, synchronous demodulation recovers the signal b(t) and the decoding of b(t) to generate d(t) is done at base bandIn both DPSK and DEPSK errors always occur in pairs Which of the above statements are correct?
69632. An audio frequency of 5 kHz is translated to a radio frequency carrier of frequency 1 MHz and transmitted it to space through an antenna. The required height of antenna is
69633. Pre-emphasis circuit is used
69634. In which frequency range is the noise figure in a transistor minimum
69635. In commercial FM Broadcasting, A radio station transmitting the signal at 98.3 MHz, it is
69636. The message carrying efficiency is best in
69637. An SSB-AM signal cannot be demodulated by
69638. Which of the following could be the equation for non-linear resistor shown in figure?
69639. The pre-emphasis circuit is used
69640. The modulation index of wideband FM signal is
69641. MTI stands for
69642. The IF frequencies in a TV receiver
69643. The most noise resistant modulation system is
69644. Which of the following is the digital system?
69645. Which of the following is an oscillator with best frequency stability?
69646. In FDM systems used for telephone, which modulation scheme is adopted?
69647. In the above case if another sine wave corresponding to 40% modulation is transmitted simultaneously, the total radiated power will be
69648. A pre-emphasis circuit
69649. In orthogonal BFSK, the energy of information bearing term is
Terms And Service:We do not guarantee the accuracy of available data ..We Provide Information On Public Data.. Please consult an expert before using this data for commercial or personal use
Powered By:Omega Web Solutions