Pump and Fan Efficiency - Overall pump and fan efficiency is the ratio power actually gained by the fluid to the shaft power supplied. Pumping Water - Costs - The cost of pumping water. Hydraulic Pumps and Motor Sizing - Motor size versus flow rate, shaft torque, shaft power and hydraulic power.
Finding out your baby's sex. The second scan is carried out at around 18-21 weeks, and its main purpose is to check for any structural abnormalities (anomalies) in the baby. If you want to find out the sex of your baby, you can usually do so during this scan. If you want to know your baby's sex, you should ask the sonographer (the person who carries out the scan) at the start of the scan, so they know that they need to check. You should be aware that it's not possible for the sonographer to be 100% certain about your baby's sex.
An ultrasound is perhaps the most common way to detect the sex of your baby. With an ultrasound, you can probably not detect the sex of yore baby until sometime between week 16 and week 20 of pregnancy. Having said that, there are a great many factors that go into how early you can detect the sex of your baby using an ultrasound. Everything from gestational age to the thickness of the motherâs abdominal wall can affect the amount of time that this process will take. An ultrasound is, after the 20th week of pregnancy, generally more than 90% accurate at being able to tell a babyâs sex.