Photonics and Lasers
13.1 A thermoelectric-based power meter has a response time of 20 s and sensitivity
(output voltage per unit incident power) of 90 mV/W. If the time response is reduced
to 8 s by increasing the thermal conductance between the sensor element
and heat sink, what will be the new sensitivity?
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A thermoelectric-based power meter has a response time of 20 s and sensitivity (output voltage per unit incident power) of 90 mV/W. If the time response is reduced to 8 s by increasing the thermal conductance between the sensor element and heat sink, what will be the new sensitivity?
2. (15 points) The piezoelectric sensor can be equivalent to a charge generator in parallel with...
2. (15 points) The piezoelectric sensor can be equivalent to a charge generator in parallel with capacitance as below: (a), at some time moment, the piezoelectric sensor generated an amount of charge of Q, what is the output voltage? (b), below is the simplified and ideal circuit of a charge amplifier for the piezoelectric sensor, at some time moment, the piezoelectric sensor generated an amount of charge of Q, what is the output voltage from this charge amplifier? Lo Vout...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is depicted in Figure 1. It features a Rankine-cycle based solar thermal power plant using tower technology. Technical data and assumptions: • = net electrical power output (turbine - pump) = 12 MW • Working fluid: water. • Condenser: outlet temperature = 320 K, outlet steam quality = 0%; no pressure drop through condenser. • Pump: adiabatic, outlet pressure = 170 bar; outlet temperature =...
1. Consider a 1N4001 silicon diode used as a temperature sensor.The 1N4001 has an n1.43 calculate...
1. Consider a 1N4001 silicon diode used as a temperature sensor.The 1N4001 has an n1.43 calculate the temperature measured for the following conditions 2. Consider a IN4007 silicon diode used as a temperature sensor. The IN4001 has an n-1.4, calculate the temperature measured for the following conditions: . VD2-0.629V @ ID2 2mA 3. Consider a IN4001 diode used as a temperature sensor. Calculate the value of n when the temperature measured is 37°C for the following conditions: . Vin =...
solve quastion 3,4 and 5 B. Tasks and Guide 1. System description and Mathematical modeling The...
solve quastion 3,4 and 5
B. Tasks and Guide 1. System description and Mathematical modeling The antenna positioning system is shown in Fig. 1. In this problem we consider the yaw angle control system, where 0(t) is the yaw angle. Suppose that the gain of the power amplifier is 5 , and that the gear ratio and the angle sensor (the shaft encoder and the data hold) are such that (t)= 0.40(t) where the units of v,(t) are volts and...
Accuracy is important. Do not round intermediates and check the answer range to make sure you...
Accuracy is important. Do not round intermediates and check the
answer range to make sure you are correct.
Values:
[01] 2.08 [02]
68.47 [03] 0.239 [04] 1173.7 [05] 1403. [06] 53.8
THE CORRECT ANSWERS WILL BE IN THE FOLLOWING RANGES:
8-1a. 140, 220 Hz
8-1b. 40:0, 62:0 mA
8-2a. 70:0, 99:0 V
8-2b. 140:0, 160:0 V
8-2c. 60:0, 99:0 V
8-2d. 60:0, 90:0 V
8-3a. 40:0; 99:0 pF
8-3b. 100; 400 mV
8-3c. 1:00; 3:00 mV
8-4a. 100; 150 V...
how do i do even questions 1-12? 90 SECTION 2 The Controller d Where load chans The magnitude of the integraR Where...
how do i do even questions 1-12?
90 SECTION 2 The Controller d Where load chans The magnitude of the integraR Where lo Problems I. Which section of the closed-loop system performs the four 2. In an Oe-OfT beating system, an error signal is produced 19. a. h length of time the error - both a and b control modes? applied input voltage (above. when the measured temperature is below) the setpoint The term derivative means A derivative controllo portional...
Matching A. Metric unit of force B. Unit of work in the metric system C. Metric...
Matching A. Metric unit of force B. Unit of work in the metric system C. Metric unit of power D. Unit of work in English system E. Unit of pressure in metric system named after the scientist Torricelli F. Mass per unit volume G. The force that is dependent on the masses and distance between them H. A unit of angular measure I. The acceleration of and object traveling with a circular motion J. The displacement of an object as...
Problem 7.036 A long, cylindrical, electrical heating element of diameter D 10 mm, thermal conductivity k240...
Problem 7.036 A long, cylindrical, electrical heating element of diameter D 10 mm, thermal conductivity k240 W/m- K, density p 2700 kg/m, and specific heat c900 J/kg K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 20 m/s, respectively (a) Neglecting radiation, estimate the steady-state surface temperature when, per unit length of the heater, electrical energy is being dissipated at a rate of 1000 W/m....
14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C)...
14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C) Megatron Inductor E) Transformer D) 23) Convert 6.8 x 10-5 W to the closest standard metric prefix. A) 68 °W B) 0.68 uW C) 680 uW D) 6.8 uw 24) Convert 3.95 x 10-4 A to the closest standard metric prefix. A) 3.95 mA 39.5 mA 0.395 mA D 395 mA Convert the following: 25) 2 x 10-3 Amp = A) 2 microamps 2...
2. (15 points) The piezoelectric sensor can be equivalent to a charge generator in parallel with capacitance as below: (a), at some time moment, the piezoelectric sensor generated an amount of charge of Q, what is the output voltage? (b), below is the simplified and ideal circuit of a charge amplifier for the piezoelectric sensor, at some time moment, the piezoelectric sensor generated an amount of charge of Q, what is the output voltage from this charge amplifier? Lo Vout...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is depicted in Figure 1. It features a Rankine-cycle based solar thermal power plant using tower technology. Technical data and assumptions: • = net electrical power output (turbine - pump) = 12 MW • Working fluid: water. • Condenser: outlet temperature = 320 K, outlet steam quality = 0%; no pressure drop through condenser. • Pump: adiabatic, outlet pressure = 170 bar; outlet temperature =...
1. Consider a 1N4001 silicon diode used as a temperature sensor.The 1N4001 has an n1.43 calculate the temperature measured for the following conditions 2. Consider a IN4007 silicon diode used as a temperature sensor. The IN4001 has an n-1.4, calculate the temperature measured for the following conditions: . VD2-0.629V @ ID2 2mA 3. Consider a IN4001 diode used as a temperature sensor. Calculate the value of n when the temperature measured is 37°C for the following conditions: . Vin =...
solve quastion 3,4 and 5
B. Tasks and Guide 1. System description and Mathematical modeling The antenna positioning system is shown in Fig. 1. In this problem we consider the yaw angle control system, where 0(t) is the yaw angle. Suppose that the gain of the power amplifier is 5 , and that the gear ratio and the angle sensor (the shaft encoder and the data hold) are such that (t)= 0.40(t) where the units of v,(t) are volts and...
Accuracy is important. Do not round intermediates and check the
answer range to make sure you are correct.
Values:
[01] 2.08 [02]
68.47 [03] 0.239 [04] 1173.7 [05] 1403. [06] 53.8
THE CORRECT ANSWERS WILL BE IN THE FOLLOWING RANGES:
8-1a. 140, 220 Hz
8-1b. 40:0, 62:0 mA
8-2a. 70:0, 99:0 V
8-2b. 140:0, 160:0 V
8-2c. 60:0, 99:0 V
8-2d. 60:0, 90:0 V
8-3a. 40:0; 99:0 pF
8-3b. 100; 400 mV
8-3c. 1:00; 3:00 mV
8-4a. 100; 150 V...
how do i do even questions 1-12?
90 SECTION 2 The Controller d Where load chans The magnitude of the integraR Where lo Problems I. Which section of the closed-loop system performs the four 2. In an Oe-OfT beating system, an error signal is produced 19. a. h length of time the error - both a and b control modes? applied input voltage (above. when the measured temperature is below) the setpoint The term derivative means A derivative controllo portional...
Problem 7.036 A long, cylindrical, electrical heating element of diameter D 10 mm, thermal conductivity k240 W/m- K, density p 2700 kg/m, and specific heat c900 J/kg K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 20 m/s, respectively (a) Neglecting radiation, estimate the steady-state surface temperature when, per unit length of the heater, electrical energy is being dissipated at a rate of 1000 W/m....
14) Which of the following is NOT a typical electrical component? A) Resistor B) Capacitor C) Megatron Inductor E) Transformer D) 23) Convert 6.8 x 10-5 W to the closest standard metric prefix. A) 68 °W B) 0.68 uW C) 680 uW D) 6.8 uw 24) Convert 3.95 x 10-4 A to the closest standard metric prefix. A) 3.95 mA 39.5 mA 0.395 mA D 395 mA Convert the following: 25) 2 x 10-3 Amp = A) 2 microamps 2...
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