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How many turns are required for a circular loop of 100-mm radius to develop a peak emf of 10mV if the loop rotates 30r/s in the earth's magnetic field? Take B = 60E-6T.
A 250hp, 500v dc shunt motor draws a nominal field current of 5A under rated load. The resistance is 90ohms. Calculate the ohmic value and power of the series resistor needed so that the field current drops to 4.5A
The voltage output from a two active gage of Wheatstone bridge was 3.5 mV. The excitation voltage was 5 V. Nominal resistance of the strain gage was 350 ohms and the gage factor was 2.05. Calculate the force in pounds on the steel rod.
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 certain 11 V dry-cell battery, completely discharged, requires a current of 100 mA for 1.2 hr to completely recharge. What is the energy storage capacity of the battery, assuming the voltage does not depend on its charge status?
A manufacturer specification sheet lists the transfer function of a pressure sensor as 45±5% mV/kPa with a time constant of 4±10%. A highly accurate test system applies a step change of pressure from 20 kPa to 100 kPa.
Briefly discuss the impact of electron energy, electron current and target on the Bremsstrahlung generated.
Digital Communications, Order the following modulation types in terms of spectral efficiency (best to worse) and explain
In a balanced three-phase system the Y-connected impedances are 3∠60°Ω. If V_bc=480∠-75° V, find current of phase "b" in polar form.
Why Can Discrete-Time FIR Digital Filters be a Linear Phase, Why can discrete-time FIR digital filters be made exactly linear phase, whereas IIR digital filters cannot?
Explain the process of processor development
The op-amp circuit measures the changes of temperature in a system. The output voltage is given by v0(t) = -R(t)vi(t). Suppose that the temperature in the system changes cyclically after t = 0, so that R(t) = [1 +0.5 cos(20πt)] u(t) and let the in..
What is the resistivity of the wire? conductivity? Using the original dimensions of the wire, how much current can you pass through the wire until a 5V signal is degraded 5% or more?
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