Understanding Motor Controls
Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 2, Problem 2RQ

The symbol shown is:

Chapter 2, Problem 2RQ, The symbol shown is:

Normally closed float switch
Normally open held closed float switch
Normally

  1. a. Normally closed float switch
  2. b. Normally open held closed float switch
  3. c. Normally open float switch
  4. d. Normally closed held open float switch
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Select the proper choice(s) for each of the following statements: 1) To control single-acting cylinder we just need: double-acting cylinder we should use A2/2-way, 5/2-way, (C) 3/3-way, 3/4-way, 2) In DCV. (B) 3/2-way, 4/2-way, (D) 4/3-way, 3/2-way. mid poistion of DCV, we can move cylinder piston rod freely without resistance by hand. (A) working ports are exhausted, (C) working ports are pressurized, 3) In pneumatics we use A Compressor (B) Pump, DCV, while to control the 4) Quick exhaust valve is used to (A) increase the cylinder return speed. (C) meter-out the cylinder speed (B) all ports are closed. no one of these options. to obtain high pressure air. (C) Turbine, (D) pressure relief valve. (B) meter-in the cylinder speed, (D) increase the cylinder extending speed. 6) Meter-in of cylinder movement is used to control the Afluid that enters the hydraulic cylinder, (B) fluid that exits the hydraulic cylinder, (C) fluid that enters the DCV (D) fluid that exits the DCV. 5) One of the…
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