Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Textbook Question
Chapter 16, Problem 1RQ
True or False: Pneumatic controls are explosion-proof.
Expert Solution & Answer
To determine
Explosion condition for pneumatic control.
Explanation of Solution
Many of the machines, buildings and industrial installation were control with pneumatic control. The pneumatic control is one of the easy controls to operate. A mechanical operate can easily understand the control and work. Generally it works with air or other fluid. It eliminates the use of electric in the control. So, there is no chance of explosion in pneumatic control. There are many of the advantages given as follows:
- Simple to understand and simple in use.
- They are safe and explosion proof.
- They are versatile and reliable.
- Lower cost.
Conclusion:
So, the statement is true that pneumatic controls are explosion proof.
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Students have asked these similar questions
An aluminum rod of length L
=
1m has mass density p = 2700 kg and
Young's modulus E = 70 GPa. The rod is fixed at both ends. The exact
natural eigenfrequencies of the rod are wexact
E
=
√
ρ
for n=1,2,3,. . . .
1. What is the minimum number of linear elements necessary to
determine the fundamental frequency w₁ of the system? Discretize
the rod in that many elements of equal length, assemble the global
system of equations KU = w² MU, and find the fundamental
frequency w₁. Compute the relative error e₁ = (w1 - wexact) /w exact
Sketch the fundamental mode of vibration.
2. Use COMSOL to solve the same problem. Show the steps necessary
to find the fundamental frequency and mode of the rod. What is the
relative error using linear elements and a normal mesh?
A ball with a mass of 5.0 kg is hanging from a string and is initially at rest.
A bullet with a mass of 10.0 g and a velocity of 200.0 m/s is fired at the ball.
The bullet embeds itself inside the ball.
How high (h) do the ball and the bullet rise?
Gravitational acceleration: g=9.81g = 9.81g=9.81 m/s².
Don't use chatgpt.
Need handwritten solution.
Mechanical engineering
Chapter 16 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 16 - True or False: Pneumatic controls are...Ch. 16 - Pneumatic controls are operated by A. water. B....Ch. 16 - One advantage of a modern control system is A....Ch. 16 - A control loop contains _______, _______, and...Ch. 16 - Pneumatic air must A. be clean and dry. B. have...Ch. 16 - The air supplied to a diaphragm is 20 psig, and...Ch. 16 - When a large volume of air is needed at a...Ch. 16 - Prob. 8RQCh. 16 - Prob. 9RQCh. 16 - An analog control signal A. has an infinite number...
Ch. 16 - Another term used to describe sensitivity in...Ch. 16 - Prob. 12RQCh. 16 - Prob. 13RQCh. 16 - One of the major components of a residential...Ch. 16 - Prob. 15RQCh. 16 - Describe a control device, and give three examples...Ch. 16 - Describe what a sensor does in a DDC system used...Ch. 16 - What is the difference between an active and a...Ch. 16 - A control system consists of what three basic...Ch. 16 - List six advantages that DDC control systems have...Ch. 16 - Describe the difference between the analog and...Ch. 16 - Describe the difference between an open-loop and a...
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