(a)
Explain the sequence of operations required to pump sumps.
(a)
Explanation of Solution
Discussion:
Float switches are used to start or stop a pump motor according to the changes in the liquid (water) level in a sump or tank. These are connected to a pump motor for sump pumping or tank operations.
If the sump is in full condition, it is required to start the pumping operation in order to empty the sump. To start the pumping operation, the float rises first and then the float switch contacts are closed. When the float switch contacts are closed, the pumping operation starts quickly in the system.
If the sump is in empty condition, it is required to stop the pumping operation in order to fill the sump. To stop the pumping operation, the float lowers first and then the float switch contacts are opened. The float lowers either directly or through a motor starter. When the float switch contacts are opened, the pumping operation stops quickly in the system.
Conclusion:
Thus, the operations required to pump sumps are explained.
(b)
Describe the sequence of operations required to fill tanks.
(b)
Explanation of Solution
Discussion:
If a tank is in full condition, it is required to stop the motor operation in order to empty the tank. To stop the motor operation, the float rises first and then the float switch contacts are closed. When the float switch contacts are closed, the motor driven pump is stopped immediately in the system.
If the tank is in empty condition, it is required to start the motor operation in order to fill the tank. To start the motor operation, the float lowers first and then the float switch contacts are opened. When the float switch contacts are opened, the motor operation starts immediately in the system.
Conclusion:
Thus, the operations required to fill tanks are described.
Want to see more full solutions like this?
- Q1/For the unity-feedback system where G (s) = K(s+ 1)(s+ 10) (s+4) (s-6) Sketch the root locus and find the value of K for which the system is closed-loop stable. Also find the break-in and breakaway points.arrow_forwardThe switch K at Figure 4 is closed at t = 0.2 second. Assuming iL(0) = 0, Find iL(t). 10 Ω w i₁(t) 2ix 20 Ω 2H 10u(t) t = 0.2 s Figure 4 Karrow_forwardThe voltage source in the circuit of Fig. P12.31 is, givenby us(t) = [10+5u(t)] V. Determine iL(t) for t ≥ 0, given thatR1 = 1 W, R2 = 1 W, L = 2 H, and C = 1 F.arrow_forward
- Don't use ai to answer I will report you answerarrow_forwardDetermine iL(t) in the circuit of Fig. P12.25, given thatbefore closing the switch uC(0−)=12 V. Also, the element valuesare R = 2 W, L = 1.5 H, and C = 0.5 F.arrow_forwardThe switch in Figure 5 is closed at t = 0 second. Find the voltage of the capacitor, vc, for t> 0. 8Ω t=0 ww + 0.15H + 24U(-t) 80- 2.5mF VC 2A 0.1H Figure 5arrow_forward
- Q1/For the unity-feedback system where G (s) = K(s+ 1)(s+ 10) (s+4) (s-6) G Sketch the root locus and find the value of K for which the system is closed-loop stable. Also find the break-in and breakaway points.arrow_forward12.22 Repeat Problem 12.21, but assume that the switch hadbeen open for a long time and then closed at t = 0. Set the dcsource at 12 mV and the element values at R0 = 5 W, R1 = 10 W,R2 = 20 W, L = 2 H, and C = 0.4 F. question 21(Determine iL(t) in the circuit of Fig. P12.21 for t ≥ 0,given that the switch was opened at t = 0 after it had been closedfor a long time, us = 12 mV, R0 = 5 W, R1 = 10 W, R2 = 20 W,L = 0.2 H, and C = 6 mF.)arrow_forwardIn Figure 1, by considering reference located at node 4, the voltage nodes will be: V1=4, V2= -5, V3=0.5 volts. If we change the location of reference to node 3, find the values for V1, V2, V4, ix, Vo, Vx and power produced by the current sources without conducting detailed node or mesh analyses. 10 www 4A ww 44 4Q 802 w + Vo 4Q 2 3 3ix Figure 1 ww 4Q 5 W4 1.50arrow_forward
- In the Figure 3 a) Find the values for Vi and ix using nodal analysis. b) Find the produced power by the current source. 50 10Ω www 37A 10Ω 20 5 ix V₁ 200 ix Figure 3 ww 100 + 4V1arrow_forward2) By series and parallel combinations find the equivalent capacitance for this circuit. ||15€ Cequivalent -66 6f 6E 12Farrow_forwardQ2/For the unity-feedback system where G(s) = K/[s (s+3) (s+ 5)], find the range of gain, K, for stability, instability, and the value of gain for marginal stability. For marginal stability also. Use the Nyquist criterion.arrow_forward
Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSON
Delmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage Learning
Programmable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill Education
Electric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSON
Engineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,