What is nozzle meter?
all india engineers academy. https://youtu.be/tLR3iFS6Q9c- venturi meter Nozzle is a device which increase the velocity of fluid A nozzle fitted at the end of a long pipe. The total energy at the end of the pipe consist of pressure energy and kinetic energy .
What is nozzle and its function?
A nozzle is often a pipe or tube of varying cross sectional area, and it can be used to direct or modify the flow of a fluid (liquid or gas). Nozzles are frequently used to control the rate of flow, speed, direction, mass, shape, and/or the pressure of the stream that emerges from them.
How do you calculate the coefficient of discharge?
The discharge coefficient of an orifice or nozzle is defined as the ratio of the actual to theoretical flow rate:Cd=Measured Flow RateTheoretical Flow Rate (1)=p12V2 (6)=pp (7)
What does a choked nozzle mean?
Choked flow is a fluid dynamic condition associated with the venturi effect. When a flowing fluid at a given pressure and temperature passes through a constriction (such as the throat of a convergent-divergent nozzle or a valve in a pipe) into a lower pressure environment the fluid velocity increases.
How does a supersonic nozzle work?
A nozzle is a relatively simple device, just a specially shaped tube through which hot gases flow. The expansion of a supersonic flow causes the static pressure and temperature to decrease from the throat to the exit, so the amount of the expansion also determines the exit pressure and temperature.
What is choken?
Choking occurs when breathing is impeded by a constricted or obstructed throat or windpipe. In some cases the air flow is completely blocked, in other cases some amount of air can pass to the lungs.
Can you die if someone chokes you?
Strangulation is when pressure is applied from the outside, cutting off blood vessels and/or airflow in the neck, preventing oxygen from reaching the brain. This pressure can cause loss of consciousness in 5 to 10 seconds, and it can cause death in a few minutes.
What are 3 common causes of choking?
Possible causes of choking on saliva include:Acid reflux. Acid reflux is when stomach acid flows back into the esophagus and mouth. Sleep-related abnormal swallowing. Lesions or tumors in the throat. Poorly fitting dentures. Neurological disorders. Heavy alcohol use. Talking excessively. Allergies or respiratory problems.
Should you give water to someone who is choking?
Do not hit him on the back or try to give water. If the person cannot cough or speak, the windpipe is blocked and he is choking and needs emergency help. The Heimlich maneuver is an abdominal thrust that forces air up and out with enough force to clear the airway.
Can you choke from anxiety?
Anxiety or panic attacks can result in a feeling of tightness or a lump in the throat or even a sensation of choking. This can temporarily make swallowing difficult.
How can I relax my throat anxiety?
You can help alleviate this tight throat feeling by relaxing your throat muscles. Gentle throat massage, rolling your neck to release tight muscles, relaxing, relaxing in a warm bath, and light to moderate exercise, for example, can all help eliminate muscle tension symptoms, including this one.
What is Pseudodysphagia?
January 2020) (Learn how and when to remove this template message) Severe pseudodysphagia is the irrational fear of swallowing and minor pseudodysphagia is the fear of choking. The symptoms are psychosomatic.
Why do I wake up thinking im choking?
Choking in your sleep is caused by the relaxation of soft tissue in the neck. As your throat collapses air cannot reach the lungs effectively, it causes you to wake up suddenly from the choking. You can stop breathing for around 10 seconds, starving the brain of oxygen.
How can I fix sleep apnea naturally?
Sleep apnea lifestyle remediesMaintain a healthy weight. Doctors commonly recommend people with sleep apnea to lose weight. Try yoga. Regular exercise can increase your energy level, strengthen your heart, and improve sleep apnea. Alter your sleep position. Use a humidifier. Avoid alcohol and smoking. Use oral appliances.
Why do I wake up at 3am for no reason?
If you wake up at 3 a.m. or another time and can’t fall right back asleep, it may be for several reasons. These include lighter sleep cycles, stress, or underlying health conditions. Your 3 a.m. awakenings may occur infrequently and be nothing serious, but regular nights like this could be a sign of insomnia.
Why do I feel like I can’t breathe when falling asleep?
Obstructive sleep apnea can cause your breathing to start and stop while you sleep. It can lead to the throat muscles relaxing so much that they block your airway. You may wake up abruptly gasping for air or choking.
What happens if you stop breathing for 1 minute?
Side effects of holding your breath low heart rate from a lack of oxygen. CO₂ buildup in your bloodstream. nitrogen narcosis, a dangerous buildup of nitrogen gases in your blood that can make you feel disoriented or inebriated (common among deep-sea divers)
Why do I randomly stop breathing?
Apnea is the medical term used to describe slowed or stopped breathing. Apnea can affect people of all ages, and the cause depends on the type of apnea you have. Apnea usually occurs while you’re sleeping. For this reason, it’s often called sleep apnea.