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the Mars Rover Spirit got stuck in the Martian sand. The wheels kept slipping. Attempts to free it were futile. Discuss the type of actuator in this case. Can you suggest any improvements in the actuator that would have prevented this unfortunate breakdown?
A Na+ ion moves from inside a cell, where the electric potential is -70 mV , to outside the cell, where the potential is 0 V. What is the change in the ion's electric potential energy as it moves from inside to outside the cell
A CS amplifier using an NMOS with gm = 3.8 mA/V is found to have an overall voltage gain of -16 V/V. What value should a resistance RS inserted in the source lead have to reduce the overall voltage gain to -8 V/V
If the accoustic impedance of water is 1.49 and for steel is 42.1, what precentage of sound energy is reflected at a water-to-steel interface? 12.5%,86.8%,43.9% or 43.59%.
A volume is divided into two equal parts by a partition. The left volume has N atoms. The atoms have a mass m. A hole of area A is made in the partition at time t=0 A)Develop an expression for the number of white atoms on each side of the partition..
Bipolar Junction Transistor, A silicon n-p-n bipolar junction transistor is designed with emitter, base and collector doping levels of 10^19cm, 10^15cm and 5*10^17cm, respectively.
Explain the term 'multiplexing' in general and describe why it is particularly important in the transmission of PAM signals and describe the main factors upon which the maximum data rate over a channel depends.
A one-dimensional infinite potential well with a width of 12 Ao contains an electron. (a) Calculate the first two energy levels that the electron may occupy. (b) If an electron drops from the second energy level to the first, what is the wavelengt..
A waveform generator has been setup with a square wave output at 4.0kHz with a 81% duty cycle. If the peak-to-peak output amplitude has been set to 6.0V, with an offset of -1.0V, what is the maximum voltage of the output waveform
write an 8051 program that would generate a 200khz, 50% duty cycle, square wave at P1.0.Use Timer 0 for the delay. Ignore the overheads cycles due to the instructions in the loop. Assume 12 MHz clock. All data must be hex.
A charge density of ohm Coulombs per square meter is uniformly distributed over a thin and very long cylindrical shell of radius a. You want to know the electric flux density field D and the electric field E generated by this charge at all points ..
calculate the short-circuit current of a three-phase delta-wye connected transformer if the short circuit occurs between phase A and the neutral at the low voltage side, and the transformer is supplied by a 13 kV line-to-line voltage.
A plant has two identical standby generator units for emergency power use. In the area of the generators, the normal noise level registers 81 dBA on the sound-level meter with the generators turned off. When one generator switches on, the noise le..
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