A four way directional control valve would be used to Question 26 options: A) Operate a...
A four way directional control valve would be used to
Question 26 options:
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A) Operate a reversible pneumatic motor B) Control the speed of a pneumatic actuator Operate a reversible pneumatic motor |
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Control the speed of a pneumatic actuator |
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Set the maximum pressure in a pneumatic system. |
Homework Answers
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A four way directional control valve would be used to
Question 26 options:
A) Operate a...
2. A 3-way, 2-position directional control valve a. can be spring return. b. can be used...
2. A 3-way, 2-position directional control valve a. can be spring return. b. can be used to adust pressure in two different branch circuits. c. cannot be shifted manually. d. has two ports. 3. A 3-way, 2-position directional control valve can have a three envelopes and two fluid ports. b. three envelopes and three fluid ports. C. two envelopes and three positions. d. two envelopes and three fluid ports.
Question 103 (1 point) A sequence valve is a compounded valve that comprises a normally closed pr...
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Question 103 (1 point) A sequence valve is a compounded valve that comprises a normally closed pressure control valve and a flow control valve True False Question 104 (1 point) Shear stress depends of flow speed True False Question 105 (1 point) When Reynolds number is less than 2000 the flow regime is laminar True False Question 106 (1 point) What method is best used to minimize system pressure and redirect pump flow to tank during non-action periods?...
1. A process control valve with an equal percentage plug is used to control an actuator...
1. A process control valve with an equal percentage plug is used to control an actuator with a maximum stem travel of 5cm. The minimum and the maximum flow rates of the valve are, respectively, 0.1 m/s and 4.0m3/s. What will be the flow rate when the stem movement is (a) 10mm (b) 20mm?
#4. To operate a steam turbine in part-load output, a throttling valve is used as shown....
#4. To operate a steam turbine in part-load output, a throttling valve is used as shown. The valve reduces the pressure of steam before it enters the turbine. The state of steam in the supply line remains fixed at 2 MPa, 500°C and the turbine exhaust pressure remains fixed at 10 kPa. Assuming the turbine to be adiabatic and reversible, determine (a)the full load specific work output in kJ/kg, (b)the pressure of the steam must be throttled to for 75%...
Using Fluidsim, please design a pneumatic circuit so that a large double-acting piston is used to...
Using Fluidsim, please design a pneumatic circuit so that a large double-acting piston is used to punch a hole on a part. The piston won't be activated until the following conditions are met a. Two hands are pushed together on two separate push buttons (using two manual 3/2 valves anda two-pressure valve). roller-activated 3/2 valve). the piston retracts. b. A part is sensed by a roller-activated switch (a c. When either hand does not touch the push button, The forward...
Automotive cruise control systems are used to hold the vehicle speed steady at a set value...
Automotive cruise control systems are used to hold the vehicle speed steady at a set value especially in long runs to prevent driver fatigue. After switched “ON” by the driver, this system takes the control of the gas throttle using an electronically controlled stepper motor, and keeps the vehicle speed constant. This system requires speed sensors to measure the controlled vehicle speed. a) Identify basic elements of the cruise control system. (Reference input, output, actuator, controller, sensor, plant) b) List...
5- The strain gage in the figure is used to measure t with I Kf resistances, and the source volta...
5- The strain gage in the figure is used to measure t with I Kf resistances, and the source voltage is 24 Volt. If under certain pressane gage resistance vanes in 20 ฉ. and the conversion constant is 2000 ibSqin per volt s strain what has been the applied pressure? 6- 6- An NC work table operates by closed-loop positioning. The system consist of a servomotor, ball screw, and optical encoder. The screw has pitch of 5.0 mm and is...
Answer the following: 1. Name four ways by which electricity is used for heating with brief...
Answer the following: 1. Name four ways by which electricity is used for heating with brief explanation of the heating mechanism in each case. 2. Explain briefly: a. The means of thyristor conduction. b. How it is used to control the speed of a dc motor? 3. What is distributed generation? 4. List any four advantages of distributed generation? 5. Distinguish between (a) uninterrupted, (b) emergency and (c) standby power and list one example each of load situation they would...
Question 4 [25 marks] An electric motor drives a coaxial rotor through a single-plate clutch which...
Question 4 [25 marks] An electric motor drives a coaxial rotor through a single-plate clutch which has two pairs of driving surfaces each 300 mm external and 175 mm internal diameter. The variation of normal pressure with radius is given by a + b/r Pa and the maximum pressure is 150 kPa. The spring force on the system is 500 N. The mass of the motor armature and shaft is 750 kg and its radius of gyration is 240 mm;...
Options for question 1 [Select] The figure shows four blocks linked by three cords. The set...
Options for question 1 [Select] The figure shows four blocks linked by three cords. The set of blocks is being pulled by a horizontal force F of magnitude 20 N. The masses are: m1 = 8 kg, m2 = 6 kg, m3 = 4kg, m4 = 2 kg. [Select] Select the answers to the following questions form the drop-down lists: 1. What is the acceleration of the 4-block system (in m/s2)? Select] 2. What is the net force acting on...
2. A 3-way, 2-position directional control valve a. can be spring return. b. can be used to adust pressure in two different branch circuits. c. cannot be shifted manually. d. has two ports. 3. A 3-way, 2-position directional control valve can have a three envelopes and two fluid ports. b. three envelopes and three fluid ports. C. two envelopes and three positions. d. two envelopes and three fluid ports.
plz answer
Question 103 (1 point) A sequence valve is a compounded valve that comprises a normally closed pressure control valve and a flow control valve True False Question 104 (1 point) Shear stress depends of flow speed True False Question 105 (1 point) When Reynolds number is less than 2000 the flow regime is laminar True False Question 106 (1 point) What method is best used to minimize system pressure and redirect pump flow to tank during non-action periods?...
1. A process control valve with an equal percentage plug is used to control an actuator with a maximum stem travel of 5cm. The minimum and the maximum flow rates of the valve are, respectively, 0.1 m/s and 4.0m3/s. What will be the flow rate when the stem movement is (a) 10mm (b) 20mm?
#4. To operate a steam turbine in part-load output, a throttling valve is used as shown. The valve reduces the pressure of steam before it enters the turbine. The state of steam in the supply line remains fixed at 2 MPa, 500°C and the turbine exhaust pressure remains fixed at 10 kPa. Assuming the turbine to be adiabatic and reversible, determine (a)the full load specific work output in kJ/kg, (b)the pressure of the steam must be throttled to for 75%...
Using Fluidsim, please design a pneumatic circuit so that a large double-acting piston is used to punch a hole on a part. The piston won't be activated until the following conditions are met a. Two hands are pushed together on two separate push buttons (using two manual 3/2 valves anda two-pressure valve). roller-activated 3/2 valve). the piston retracts. b. A part is sensed by a roller-activated switch (a c. When either hand does not touch the push button, The forward...
5- The strain gage in the figure is used to measure t with I Kf resistances, and the source voltage is 24 Volt. If under certain pressane gage resistance vanes in 20 ฉ. and the conversion constant is 2000 ibSqin per volt s strain what has been the applied pressure? 6- 6- An NC work table operates by closed-loop positioning. The system consist of a servomotor, ball screw, and optical encoder. The screw has pitch of 5.0 mm and is...
Question 4 [25 marks] An electric motor drives a coaxial rotor through a single-plate clutch which has two pairs of driving surfaces each 300 mm external and 175 mm internal diameter. The variation of normal pressure with radius is given by a + b/r Pa and the maximum pressure is 150 kPa. The spring force on the system is 500 N. The mass of the motor armature and shaft is 750 kg and its radius of gyration is 240 mm;...
Options for question 1 [Select] The figure shows four blocks linked by three cords. The set of blocks is being pulled by a horizontal force F of magnitude 20 N. The masses are: m1 = 8 kg, m2 = 6 kg, m3 = 4kg, m4 = 2 kg. [Select] Select the answers to the following questions form the drop-down lists: 1. What is the acceleration of the 4-block system (in m/s2)? Select] 2. What is the net force acting on...
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