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The most feared question of the job interview is "What is your biggest weakness?" There are many ways to get this wrong:

The worst thing to do is to admit a weakness that's so bad that nobody will hire you, such as: # I'm really lazy. # I can't control my temper. # I killed my last boss.

Don't do that. But people are so afraid of making this mistake that they do the opposite: They try to BS their way through this question by pretending a strength is a weakness.

# I'm so good at what I do that I make the people around me look incompetent. # I work too hard. # I care too much. Don't do that either. You'll come off as shallow, manipulative, and insincere.

If an interviewer asks you this question in an interview, he or she wants to find out if you can take criticisms, and if you can admit your flaws and mistakes. And that you're working towards either correcting them or working around them.

Don't just look at this question as a crisis to be survived. Look at it as an opportunity to shine.

Your best strategy is to admit a real weakness, calmly and sincerely, while also showing why I'd be so happy that I hired you.

Here's one example:

"Usually I'm able to inspire my team, and I usually do a good job aligning their passions and skills with the company's needs. But when I can't get a person to want to do the job, and I have to have the tough conversations, I struggle. That's when I have to turn to my manager for some guidance and support. Sometimes you've got to be tough, but it doesn't come naturally for me, and it's a real challenge for me when this happens."

That answer helps you show who you really are, and why I should hire you. You admitted a real weakness, and showed that you take it very seriously, but the weakness was wrapped inside a bigger strength. And in the answer, you showed me what you're passionate about at work.

Here's a final example: "When I sit in a bug-review meeting and somebody can say 'Lower the priority on that, raise the priority on that, defer this, close that…' I'm always so impressed, because I can't do that. I can't think that fast. I always need more time, to think about different perspectives. I wonder what's the problem behind the problem, and I try to find a solution that gets the best of all worlds. And that's great, when there's time, but you can't do that on every bug in your bugbase. I've always managed to complement myself with people who are really good at making quick decisions. And I've always positioned myself so I can apply my strengths, analyze the bigger questions, and propose solutions. But stress-free rapid-fire decision-making… I've tried, and I've found the best solution is to find people who are great at it and work with them."

This is a little riskier, because some people will never respect you for just accepting a weakness and working to your strengths instead. But it's often worth it, because even if it risks losing a job you'd be miserable and terrible at, it increases your chances of finding the job that matches your strengths. Note how in that answer you show where you can really help the company, and you show how much you appreciate other people and their skills.

Finally, these kinds of answers, if they're sincere and personal, will make you stand out. If there are a lot of people competing for a single job, your best bet is to stand out in a positive way, and ironically the "What is your weakness?" question is a great opportunity to do that.

In summary… don't just repackage a strength as a weakness. Take the risk, and admit a real weakness, but in a way that also shows off your strengths, your sincerity, and who you are.

These are used to measure flow rate.

With an orifice plate, the fluid flow is measured through the difference in pressure from the upstream side to the downstream side of a partially obstructed pipe. The plate obstructing the flow offers a precisely measured obstruction that narrows the pipe and forces the flowing fluid to constrict.

The orifice plates are simple, cheap and can be delivered for almost any application in any material.

The TurnDown Rate for orifice plates are less than 5:1. Their accuracy are poor at low flow rates. A high accuracy depend on an orifice plate in good shape, with a sharp edge to the upstream side. Wear reduces the accur

Due to simplicity and dependability, the Venturi tube flowmeter is often used in applications where it's necessary with higher TurnDown Rates, or lower pressure drops, than the orifice plate can provide.

In the Venturi Tube the fluid flowrate is measured by reducing the cross sectional flow area in the flow path, generating a pressure difference. After the constricted area, the fluid is passes through a pressure recovery exit section, where up to 80% of the differential pressure generated at the constricted area, is recovered.

With proper instrumentation and flow calibrating, the Venturi Tube flowrate can be reduced to about 10% of its full scale range with proper accuracy. This provides a TurnDown Rate 10:1.

The rotameter consists of a vertically oriented glass (or plastic) tube with a larger end at the top, and a metering float which is free to move within the tube. Fluid flow causes the float to rise in the tube as the upward pressure differential and buoyancy of the fluid overcome the effect of gravity.

The float rises until the annular area between the float and tube increases sufficiently to allow a state of dynamic equilibrium between the upward differential pressure and buoyancy factors, and downward gravity factors.

The height of the float is an indication of the flow rate. The tube can be calibrated and graduated in appropriate flow units.

The rotameter meter typically have a TurnDown Ratio up to 12:1. The accuracy may be as good as 1% of full scale rating.

Magnetic floats can be used for alarm and signal transmission functions.

The pitot tube are one the most used (and cheapest) ways to measure fluid flow, especially in air applications as ventilation and HVAC systems, even used in airplanes for the speed measurent.

The pitot tube measures the fluid flow velocity by converting the kinetic energy of the flow into potential energy.

The use of the pitot tube is restricted to point measuring. With the "annubar", or multi-orifice pitot probe, the dynamic pressure can be measured across the velocity profile, and the annubar obtains an averaging effect.