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You Are On Multi Choice Question Bank SET 1162

58101. In which of these does thermionic emission occur?





58102. In a positive-edge-triggered JK flip-flop, a low J and a low K produce __________ state. A high __________ on the rising edge of the clock.





58103. The rate of change of digital signals between High and Low level is





58104. 39.1210 = __________ 10





58105. Which of the following is best suited for parity checking and parity generation?





58106. In the circuit shown below, the outputs Y1 and Y2 for the given initial condition Y1 = Y2 = 1 and after four input pulses will be





58107. The op amp is used in





58108. Assertion (A): Power drain of CMOS increases with operating frequency Reason (R): All unused CMOS inputs should be tied either to a fixed voltage level (0 or VDD) or to another input.





58109. Prims algorithm is based on ------method





58110. In two level logic, logic race does not occur.



58111. The resolution of an n bit DAC with a maximum input of 5 V is 5 mV. The value of n is





58112. 2's complement of binary number 0101 is





58113. An OR gate has 4 inputs. One input is high and the other three are low. The output





58114. Decimal number 10 is equal to binary number





58115. Both OR and AND gates can have only two inputs.



58116. Graph Colouring is which type of algorithm design strategy





58117. The asymptotic notation for defining the average time complexity is





58118. The first Indian ruler to organise Haj pilgrimage at the expense of the state was?





58119. Dijkstra’s banking algorithm in an operating system,solves the problem of





58120. Interval between the time of submission and completion of the job is called





58121. The input impedance of short-circuited line of length l where λ/4 < l < λ/2, is





58122. A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls find cut off wavelength for dominant mode.





58123. Find the radiation resistance of an antenna of length λ/10 meter?





58124. Charge needed within a unit sphere centred at the origin for producing a potential field,





58125. A rectangular metal waveguide filled with a dielectric of relative permittivity εr = 4, has the inside dimensions 3 x 1.2 cm, the cut off frequency for the dominant mode is





58126. A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls Calculate group velocity for dominant mode.





58127. For F1 layer the maximum ionic density is 2.3 x 104 electrons per cc. The critical frequency for this layer will be





58128. Olympus Mons, the highest volcanic mountain is in which planet?





58129. The velocity of electromagnetic wave in a good conductor is





58130. The phenomenon of natural rise or fall of liquid column in a narrow tube is known as?





58131. Consider a 300 Ω, quarter wave long at 1 GHz transmission line as shown in figure. It is connected to a 10 V, 50 Ω source at one end is left open circuited at the other end. The magnitude of the voltage at the open circuit end of the line is





58132. The phase angle corresponding to λ/4 in a standing-wave pattern is





58133. A hollow rectangular waveguide has dimensions a = 2b. Calculate the amount of attenuation, if the frequency is 3 GHz, and b = 1 cm.





58134. Calculate the directivity of an antenna for θE = 30°, θH = 60





58135. Most antenna consisting of a 50 meter long vertical conductor operates over a perfectly conducting ground plane. It is base fed at a frequency of 600 kHz. The radiation resistance of the antenna in ohms is


58136. A (75 - j 40) W load is connected to a co-axial line of z0 = 75ω at 6 MHz. The load matching on the line can be accomplished by connecting





58137. A plane wave is characterized by the wave is





58138. The electric field on the surface of a perfect conductor is 2V/m. The conductor is immersed in water with ε = 80 ε0. The surface charge density on the conductor is ((ε0 = 10-9/36p )F/m)





58139. A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls calculate the phase velocity for dominant mode.





58140. A plane electromagnetic wave travels in dielectric medium of relative permittivity 9. Relative to free space, the velocity of propagation in the dielectric is





58141. Consider a loss less antenna with a directive gain of + 6 dB. If 1 mW of power is fed to it the total power radiated by the antenna will be





58142. A uniform plane wave is one in which





58143. Provide antonyms of the given words: Blatant?





58144. A short circuited stub is shunt connected to a transmission line as shown in the figure is, if z0 = 500 ohms, the admittance y seen at the function of the stub and the transmission line is





58145. Which of the following should dominant wave have?





58146. Calculate the wave impedance for TM mode in rectangular waveguide for dominant mode at 3 GHz having





58147. The divergence of the electric field intensity at any point equals





58148. For a 400 kHz transmission line having L = 0.5 mH/km, C = 0.08 mF and negligible R and G, the value of propagation constant P will be





58149. The Depth of penetration of EM wave in medium having conductivity σ at a frequency of 1 MHz is 25 cm. The depth of penetration at a frequency of 4 MHz will be





58150. What is the characteristic impedance at 10 MHz?





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