Problem 23.3A system operates at steady state with an input shaft rotating at 1800 rpm (revolutions per minute) witha torque of 16,700 N-m. The generator produces a current at 230 amps with a voltage of 13 kV. There isheat loss to the surroundings by convection (hconv = 110 W/m²K, A₁-32 m², Tamb = 298K).(a) Draw and label a system diagram.(b) Calculate the shaft power.(c) Calculate the electric power.(d) Calculate the rate of heat transfer.(e) Calculate the surface temperature of the generator housing.Ans: b) 3000 kW ≤ |WS| ≤ 3500 kWc) 2500 kW ≤ We ≤ 3500 kWd) 100 kW ≤ || ≤ 200 kWe) 325K ≤ |TS| ≤ 375K

Answered: Image /qna-images/answer/37a17478-96c3-4517-b0de-68b945b1a160.jpg

Problem 23.3 A system operates at steady state with an input shaft rotating at 1800 rpm (revolutions per minute) with a torque of 16,700 N-m. The generator produces a current at 230 amps with a voltage of 13 kV. There is heat loss to the surroundings by convection (hconv= 110 W/m²K, As=32 m², Tamb = 298K). (a) Draw and label a system diagram. (b) Calculate the shaft power. (c) Calculate the electric power. (d) Calculate the rate of heat transfer. (e) Calculate the surface temperature of the generator housing.

Problem 23.3 A system operates at steady state with an input shaft rotating at 1800 rpm (revolutions per minute) with a torque of 16,700 N-m. The generator produces a current at 230 amps with a voltage of 13 kV. There is heat loss to the surroundings by convection (hconv= 110 W/m²K, As=32 m², Tamb = 298K). (a) Draw and label a system diagram. (b) Calculate the shaft power. (c) Calculate the electric power. (d) Calculate the rate of heat transfer. (e) Calculate the surface temperature of the generator housing.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Related questions

Q: A Solid steel shaft running at 600rpm is supported on bearings 600mm apart. The shaft receives 40kW…

Q: 5.4 In the continuous stirring heating tank, the flow rate of the influent is 200lb/min, the…

A: Write the expression of temperature variation. T=T0e-kt 80=90e-kt ...... (1)

Q: 5. A 10 kg block is attached to a spring with an unstretched length of 0.1m and spring constant…

A: Step 1: Work Done Against FrictionThe force of kinetic friction 𝐹𝑓 is given by:𝐹𝑓=𝜇𝑘⋅𝑁…

Q: The thermal efficiency of a reversible power cycle operating between hot and cold reservoirs is 50%.…

A: Given data:- Thermal efficiency of reversible power cycle =50% to find:- Coefficient of performance…

Q: A household freezer operates in a room at 20 C. Heat must be transferred from the cold space at a…

A: heat transfer =2KW lowest temp =-30C highest temp = 20C

Q: Consider the heat pump cycle outlined above. If the C.O.P. of the cycle is reported to be Y = 6.0…

Q: combin bis oin bintan 245 to By analyzing the graph shown above, state your statement of why the t₂,…

A: There are two plots provided, depicting the relationship between time and two key parameters:…

Q: Company Z has the following historical information about sales for one of its hydraulic pump models…

A: Given:The company's operating costs are as follows:Cost per final unit produced "defect free":…

Q: A refrigeration cycle has a coefficient of performance equal to 75% of the value of that of a…

A: Given, COPactual = 0.75 COPreversible COP - coefficient of performance Tcold bath = -5°C, T hot…

Q: Qin DD0000 Wnet Qout Qout The diagram above represents the thermodynamic cycle of a power plant that…

A: Given : High temperature reservoir = 610°C=883 K Low temperature reservoir = 20°C = 293 K Power…

Q: The expansion phase of a simplified diesel cycle is simulated by an air-filled piston-cylinder…

A: Given: The ratio of the final specific volume to the initial specific volume is, rex=20=v3v1. The…

Q: Learning Goal: To determine the angle of twist for a circular shaft that is composed of varying…

Q: Dynamics of a current controller DC motor is given as follows: Ktim = Jmẞ +bmẞ where, ẞ denotes the…

A: Step 1: Obtain the Transfer FunctionGiven the dynamics of the current-controlled DC motor:…

Q: To understand the mathematical expression for a thermodynamic cycle you must calculate the index of…

A: Consider below P-V diagram to understand different states. From the data given in question, P1 =…

Q: 2 m radius and at 22

Q: By analyzing the graph shown above, state your statement of why the t₂, t4 and t are effecting the…

A: Given:

Q: Q.5- Consider the liquid-level control system shown in Figure below. assume that the velocity of the…

A: Given:To find:Determine the transfer function.

Q: Dynamics of a current controller DC motor is given as follows: KimJm+bB where, ẞ denotes the shaft…

A: % ParametersJm = 0.48; % kg*m^2bm = 0.2; % Nms/radKt = 0.96; % Nm/A% Transfer function of the…

Q: Problem #4 ' Consider the gas pressure control system shown below. The relationship betv flow rate…

A: Value of kip is not given, so iam using it as a variable

Q: The heat pump cycle shown in the figure below operates at steady state and provides energy by heat…

Q: Develop MATLAB code to simulate performance of air cycle machine with fixed turbine outlet…

A: Given:

Question

Problem 23.3
A system operates at steady state with an input shaft rotating at 1800 rpm (revolutions per minute) with
a torque of 16,700 N-m. The generator produces a current at 230 amps with a voltage of 13 kV. There is
heat loss to the surroundings by convection (hconv = 110 W/m²K, A₁-32 m², Tamb = 298K).
(a) Draw and label a system diagram.
(b) Calculate the shaft power.
(c) Calculate the electric power.
(d) Calculate the rate of heat transfer.
(e) Calculate the surface temperature of the generator housing.
Ans: b) 3000 kW ≤ |WS| ≤ 3500 kW
c) 2500 kW ≤ We ≤ 3500 kW
d) 100 kW ≤ || ≤ 200 kW
e) 325K ≤ |TS| ≤ 375K

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Given and Part A

VIEW

Step 2: Part B,C and D

VIEW

Step 3: Part E

VIEW

Solution

VIEW

Step by step

Solved in 4 steps with 3 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

20. A regenerative braking system stores kinetic energy of a car so that it can be recovered when the vehicle resumes moving. One way to do this is to “store” the energy in a spinning flywheel. One such design uses a solid disk flywheel with moment of inertia 0.040 kg m2 and maximum rotation rate 45000 rpm. (a) What is the maximum energy storage? (b) In principle it could store the kinetic energy of a 1700 kg car moving at what speed before braking? (c) If this energy is used to start the car moving again in 10.0 s, what is the power output of the system?
can you please find solution for part c?
Q.5- Consider the liquid-level control system shown in Figure below. assume that the velocity of the power piston (valve) is proportional to pilot-valve displacement x, dy/dt = K₁ X where K₁ is a positive constant. We also assume that the change in the inflow rate q; is negatively proportional to the change in the valve opening y, Q₁ = -Kv y Assuming the following numerical values for the system, C=2 m², R= 0.5 sec/m², K₁=1 m²/ sec K₁=4 sec-¹ or or a=0.25 m, b= 0.75 m, Obtain the transfer function H(s)/Qd(s). 0.01 n.h ANV L= C(Capacitance) R (Resistance)
Question 6 Datum head or potential head can be presented by: + v²r2g + Z P/pg v2128 A Moving to another question will save this response.
Please answer all questions or leave for someone else to answer. A feedwater heater, operating in steady state, has 2 inlets and one outlet, at inlet 1 steam enters at a pressure of 5Mpa, a temperature of 275°C with a mass flow rate of 40kg/s. At input 2 it is liquid water at a pressure of 5Mpa at 40°C and through a surface of 25cm ^2, at output 3 there is a volumetric flow of 0.06m^3/sec. Determine: a) mass flow of input 2 and 3 b) speed at input 1 c) enthalpy at output 3 d) outlet temperature in 3 e) the quality value if any
A 5V high-capacity V-belt carries a load horsepower of 12.5V, but a service factor of 1.5 must be used. Pulley diameters are 9.75in, and turn 1750rpm. Compute for the following: a) Design Power b) Belt speed in FPM (foot per minute) c) Net belt pull 33000 x HP Net belt pull (Ib;) = NEPM
| Part of a refrigeration system operates at steady state with Refrigerant 22 as shown in the figure below. There is no significant heat transfer to or from the heat exchanger, valve, and piping. Kinetic and potential energy effects are negligible. State 1 is a saturated liquid. What temperature is it, in °F? Describe the refrigerant at state 4 as one of the following: compressed liquid, saturated liquid, tyro-phase mixture, saturated vapor, or superheated vapor. Determine the required mass flow for the given operating conditions, in lb/min. Determine the rate of heat transfer between the evaporator and its surroundings, in b. Btu/min. Make sure to clearly state the direction of heat transfer. 1. T=10°F P= 15 Ibf in (AV), = 9.5 ft/min. Pi= 120 Ibf/in.? Heat exchanger Throttling valve Evaporator P 15 lbfin.2 X3 = 1.0 P2= 15 lbf/in.2
an airplane turbofan compressor blade is 3.0 m long and is rotating at 12350 rmp. Calculate the following- angular speed, w_____________rad/s linear spped at the tip of the blade, v=_________m/s angular and linear displacement after 3.3s, 0= ___________rad s______________m
A motor generator set, as shown in Fig.24.13, consists of two armatures A and C connected with a flywheel between them at B. The modulus of rigidity of the connecting shaft is 84 GPa. The system can vibrate torsionally with one node at 95 mm from A, the flywheel being at antinode. Find (a) the position of another node (b) the natural frequency of vibration and (c) the radius of gyration of the armature C. The other data are given below:
A refrigerator unit having mass of 35 kg is to be supported on three springs, each having a spring stiffness s. the unit operates at 480 rpm. Find the value of stiffness s if only 10% of the shaking force is allowed to be transmitted to the supported. Ex. 9.2.4:
Hi, can you please help me with these two questions? I would like to understand what is happening through the schematics first before moving on to the substantive equations.