Concept explainers
Whether the component is generally normally closed or open when it is used for the function of start.
Explanation of Solution
For the component that are used to start are generally normally open as initially they have open contacts and as the component is turned on the contacts get closed and the circuit starts to work.
Consider the Figure 28-2 the start button here is used to start the operation of the circuit and the other start button here is used to start the operation of the circuit. Where the other start button is connected in parallel to the already existing start button. So any one of both the switches can energize the coil M. Thus, the energized coil changes the position of the M contacts of the circuit. The contacts between the line and the load is then closed and the work starts. As the start button is released, the parallel connected auxiliary contacts gets closed and the circuit operation continues.
Thus, the switch is of normally open type.
Want to see more full solutions like this?
Chapter 28 Solutions
INDUSTRIAL MOTOR CONTROL
- Complete fbd. The e is inclined.arrow_forwardThe parabolic cable running between the two transmission towers is carrying a uniformly distributed load of 15 kN/m over a span of L = 20 m with a sag of y = 5 m. The left end of the cable is connected at point F as shown in the spot detail. The protruding members of the transmission tower is to be analyzed assuming pin connection at joints A and K. Given: a = 1.2 m, b = 0.8 m, c = 1.0 m, d = 0.6 m, and e = 0.3 m. Calculate the following with complete fbd: indicate if in compression or tension on the membersa. Maximum and minimum tension of the cable, in kN.b. Length of the cable, in m.arrow_forwardQ8 In an ideal Diesel cycle the pressure and temperature at the beginning of compression are (98.5 KN/m²) and (60 °C) respectively. The maximum pressure attained during the cycle is (4.5 MN/m²) and the heat received during the cycle is (850 Kj/Kg) of working fluid. Determine (a) the compression ratio. (b) the temperature at the end of compression and (c) the temperature at the end combustion. Answers (a) 15.3, (b) 989 K, (c) 1566 Karrow_forward
- Q9 An air-standard cycle is executed in a closed system with (0.002 Kg) of air, and it consists of the following three processes : 1-2 Isentropic compression from (100 KPa) and (27 °C) to (700 KPa). 2-3 P=constant heat addition to initial specific volume. 3-1 v constant heat rejection to initial state. (a) Show the cycle on P-v and T-s diagram. (b) Calculate the maximum temperature in the cycle. Answer T3 = 2100 K (c) Determine the thermal efficiency. Answer 18.5%arrow_forwardhelp me solve pleasearrow_forwardPart A The block is supported by the short link BD, the ball-and-socket joint A, and cords CE, CF. Suppose that F₁ =5 kN and F2 = 8.5 kN. (Figure 1) Determine the z component of reaction force at B using scalar notation. Express your answer to three significant figures and include the appropriate units. 미 μA ? B₂ = Value Units Submit Previous Answers Request Answer × Incorrect; Try Again Part B Determine the tension in the cord CE. Express your answer to three significant figures and include the appropriate units. μA ? Units FCE= Value Submit Previous Answers Request Answer × Incorrect; Try Againarrow_forward
- Learning Goal: To analyze a rod assembly in three-dimensional space and determine the support reactions by using the equations of equilibrium for a rigid body. The rod assembly shown has smooth journal bearings at A, B, and C. The forces F₁ = 650 N, F₂ = 560 N, F3 = 430 N, and F₁ = 925 N are applied as shown in the figure. The geometry of the rod assembly is given as a = 0.900 m, b=0.600 m, and c = 0.650 m. Neglect the weight of the rod. Determine the 2 component of the reaction exerted on the rod at C. Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) НА ? Cz = Value Units x A B FA Submit Previous Answers × Incorrect; Try Again - Part C - Finding the z component of the reaction at B Determine the component of the reaction on the rod at B. Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) μA B₂ = Value Units Submit Previous Answers × Incorrect; Try Again ? Part D -…arrow_forwardSolve this problem and show all of the workarrow_forwardThe end of the boom O in Fig. 2-19a is subjected to the three concurrent and coplanar forces. Determine the magnitude and direction of the resultant force. F₂-250 N F:-200 N 45° I OF-400 N (a)arrow_forward
- Understanding Motor ControlsMechanical EngineeringISBN:9781337798686Author:Stephen L. HermanPublisher:Delmar Cengage LearningPrecision Machining Technology (MindTap Course Li...Mechanical EngineeringISBN:9781285444543Author:Peter J. Hoffman, Eric S. Hopewell, Brian JanesPublisher:Cengage LearningElectrical Transformers and Rotating MachinesMechanical EngineeringISBN:9781305494817Author:Stephen L. HermanPublisher:Cengage Learning
- Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning