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Explain the working principle of a push pull dc-dc converter. Sketch the appropriate waveforms. Comment on its power handling capabilities.
With neat sketches, describe the high resistance and low resistance methods of arc interruption. With a neat sketch, describe the process of current chopping.
Describe the main characteristics of a real time embedded system which distinguishes it from non real time systems. Describe the IEEE 802.11 protocol for wireless communication in embedded systems.
Sketch the Fourier transform of a rectangular pulse of amplitude 10 V and width 0.1 second that is centered on the zero time axis. Indicate the amplitude at dc and for the first spectral peak.
Show by means of truth tables the proof of De Morgan’s Laws for three variables and distributive law of * over +.
Define signal? Explain the significance of signals with respect to data communication and network. What is noise? Explain different types of noise.
Define “Sampling theorem”. Describe the importance of sampling in signal processing. Describe the problems of long distance transmission.
Using Octave, create and test set of programming statements to generate fs bandpass ranges (2fc -B)/m & 2fc + B)/(m+1)) along with minimum fs value (fs >=2B), and positioned sampled sp
Draw and describe the DMA operation with respect to 8085. What is the functionality of SOD and SID in 8085? Explain RS 232C interface.
Describe various interrupts of 8085. Describe mode 0 and mode 1 operation of 8253 with neat diagrams. Draw the block diagram of 8253. Explain in brief. What is ISR? How is it executed in 8085?
Modify the state diagram branching conditions in the diagrams shown below as required to make sure the sum and exclusion rules are obeyed in each case. You can add a holding conditions or change bra
One of the sidebands of an AM (DSB-LC) broadcast station is measured to have a power of 63 dBm. If the modulation is 100%, what is the total signal power in watts?
Design and test (exhaustively) 4-bit ripple carry adder, i. e., an array of 4 full adders that adds any 4-bit binary number A3A2A1A0 to the 8-4-2-1 BCD code of third and fourth non-zero and differen
Write down the dfference between intrinsic & extrinsic semiconductor. Describe P-Type and N-Type semiconductor.
Describe NRZ, RZ, Manchester and differential Manchester encoding. Explain stop and wait, sliding window protocol with diagram.
Draw the circuit diagram of Huntley oscillator and briefly describe how the oscillations are maintained in this oscillator.
Sketch the typical input - output characteristics of a BJT when connected in: Common Emitter Configuration, Common Base Configuration
What is the value of infinity in single precision IEEE standard? How many sub ranges are defined in single precision IEEE standard?
In Power World, vary the value of the capacitor bank in bus 3 from 1 pu to 0.5 pu in steps of 0.1. Plot the bus pu voltage.
Give the significance of Distribution system and describe the various factors influencing the distribution system planning.
Describe various capacitances, potential dividers and compare their performance for measurement of impulse voltages?
What is thermal breakdown in solid dielectric? How is it practically more important than other methods?
Describe in brief the different numerical methods available for estimation of electrical field distribution in dielectric media?
What precautions must be taken when employing a sampling oscilloscope?
Describe the terms Sensitivity and Resolution of an instrument with appropriate example.