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A government official said, “Currently, the traffic signals installed along the roads have a fixed signal timer but with the Japanese technology, signals will automatically change according to the number of vehicles along the road.” Which of the following could be the reason for the statement? I: The installation of smart signals will reduce the waiting time at signals and junctions. II: The installation of smart signals will solve the traffic woes in the city. III: The technology will be an integrated traffic management center that will ease congestion in the city.
Consider the following statements regarding modulation : 1. The communication systems, where a weak signal is transmitted by the use of a modulation is essential in carrier signal. 2. When the frequency of the high frequency signal is varied in accordance with the intensity of the low-frequency weak signal, the modulation is said to be frequency modulation. 3. The process of recovering original baseband signal from the modulated signal is called phase modulation. Which of the above statements are correct ? 
In which of the following case we can surely say that the body A is charged: a) When a positively charged body is kept near to body A and it gets attracted b) When a negatively charged body is kept near to body A and it gets  attracted c) When a positively charged body is kept near to body A and it gets repelled
Consider the following statements and identify which of the following are true? While calculating GDP, income generated by foreigners in a country is taken into consideration While calculating GDP, income generated by nationals of a country outside the country is taken into account While calculating GNP, income generated by foreigners in a country is taken into consideration While calculating GNP, income generated by nationals of a country outside the country is taken into account
A DSB-SC signal is generated using the carrier signal cos (ωct + θ) and modulating signal m(t). What is the envelope detector output of this DSB-SC signal?
If the control signals are generated by combinational logic, then they are generated by a type of _______________ controlled unit.
Consider the following solution to the producer-consumer synchronization problem. The shared buffer size is ?. Three semaphores empty, full and mutex are defined with respective initial values of 0, ? and 1. Semaphore empty denotes the number of available slots in the buffer, for the consumer to read from. Semaphore denotes the number of available slots in the buffer, for the producer to write to. The placeholder variables, denoted by P, Q, R, and S, in the code below can be assigned either empty or full. The valid semaphore operations are: wait ( ) and signal ( ). Producer: Consumer: do {         wait (P) ;         wait (mutex) ;         //Add item to buffer         signal (mutex) ;         signal (Q) ; } while (1) ; do {          wait (R) ;          wait (mutex) ;          //Consume item from buffer          signal (mutex) ;          signal (S) ; } while (1) ;   Which one of the following assignments to P, Q, R and S will yield the correct solution?
A rectangular pulse train s(t) as shown in the figure is convolved with the signal cos2(4π × 103t). The convolved signal will be a
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In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: A tsunami is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. B: Earthquakes, volcanic eruptions and other underwater explosion above or below water all have the potential to generate a tsunami. C: Unlike normal ocean waves, which are generated by wind, or tides, which are generated by the gravitational pull of the Moon and the Sun, a tsunami is generated by the displacement of water. D: Thus, tsunami can not be attributed to gravitational pull of the moon or the sun.
True breeding Drosophila flies with curved wings and dark bodies were mated with true breeding short wings and tan body Drosophila, The F1 progeny was observed to be with curved wings and tan body. The F1 progeny was again allowed to breed and produced flies of the following phenotype, 45 curved wings tan body, 15 short wings tan body, 16 curved wings dark body and, 6 short wings dark body. The mode of inheritance is