1ΚΩ w++ 1ΚΩ 10ΚΩ www 1ΚΩ ww 10kQ Va For the following circuit with an ideal OP-AMP, Vsat+ = 10V and Vsat- = -9V. Calculate Va as a function of V1, in the active region and saturation regions. Indicate for which values of V1 it is in each region. Hint: do KCL at V+ and V-, and remember that it is ideal. 12:05 p. m.

A balanced positive-sequence wye-connected 60-Hz three-phase source has line-to-line voltages of VL = 440 V rms. This source is connected to a balanced wye-connected load. Each phase of the load consists of a 0.5-H inductance in series with a 50-? resistance. Assume that the phase of Van is zero. A) Find the line-to-neutral voltage phasor Van. Enter your answer using polar notation. Express argument in degrees. B) Find the line-to-neutral voltage phasor Vbn. Enter your answer using polar notation. Express argument in degrees. C) Find the line-to-neutral voltage phasor Vcn. Enter your answer using polar notation. Express argument in degrees. D) Find the line-to-line voltage phasor Vab. Enter your answer using polar notation. Express argument in degrees.

Mechanical Vibration Question is image

Q5/ Determine the Nodal Voltage for the figure 13 V₁ R3 ww 20 z 4A www 12 Ry 202 R₂602 ZA

Find out the error for the given program io = 1.7e-8; % dark saturation current in amperes tc = 27; % cell temperature in degree celsius isc = 250 ; % short circuit current density A/ square meter pin = 820; % solar radiation in w/square meter k =1.381e-23; % Boltzmann's gas constant e= 1.602e-19; % electronic charge t= 273+tc % cell temperature in Kelvin vmax=0.526; % mayi mum voltage in volts imax = (e*vmax)*(isc+io)/(k*t+e*vmax) pmax= vmax*imax efficiency = (pin/pmax)*100 O error in efficiency O no error O Error in pmax O Error in imax O no output

2. Figure 1 shows a sensor consists of a core, an armature and a variable air gap. The core with 3.0 cm depth and 10000 relative permeability has 200 coil turns. On the other hand, the armature is a steel plate of thickness 0.2 cm and has similar relative permeability with the core. Assuming the relative permeability of air is unity and the permeability of free space is equal to 4x x 10-7 H.m, calculate the inductance of the sensor for air gaps of 0 mm and 2 mm. Please write the answers in 3 decimal places. 2.0 cm 1.0 cm 6.0 cm 3.0 cm 1.5 cm Figure I

The sinusoidal current waveform having the maximum value of 70 A, then the R.M.S value is

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What is the natural frequency for the following system? Assume small displacements? The system is shown in its equilibrium position. wwwwwwwwwwww min Mass MOI = Jo Equilibrium position 203 m

Q.11 - Consider the positions servomechanism is shown in figure below. Assume the following numerical values for the system constant are. Kp = gain of potentiometer detector = 7.64 v/ rad, Kb= back e. m. f. constant =5.5*10-2 V/rad/sec K; = motor torque constant = 6*10–5 Nm/A C = 4*10-2 Nm/ (rad /sec). Determine the natural frequency and damping ratio of the system. Ra = armature winding resistant =2 2, Ka=Gain of amplifier = 10 Jm = 1*10-5 Kg.m2. J =4.4*103 Kg.m2 n = gear ratio=1/10, Neglect Cm and la Amp. %₂ ဦးအောင်မျိုာနစ် နှစ် DH 0050 constant N₁