Why contactor is used in motor? A contactor is a large relay, usually used to switch current to an electric motor or another high-power load. Large electric motors can be protected from overcurrent damage through the use of overload heaters and overload contacts. What is difference between circuit breaker and contactor? A contactor is an […]
Why science is called science?
Why science is called science? In English, science came from Old French, meaning knowledge, learning, application, and a corpus of human knowledge. It originally came from the Latin word scientia which meant knowledge, a knowing, expertness, or experience. What is the function of science? Science is an integral part both of the material and economic […]
How do I count positive and negative numbers in Excel?
How do I count positive and negative numbers in Excel? Here, the COUNTIF function can help you quickly to count how many positive numbers or negative numbers in a range. Notes: 1. If you want to count the number of negative values only, please apply this formula =COUNTIF($A$1:$D$7,”<0″). Can Excel Count negative numbers? To count […]
What would be the path of reflected light if an incident ray passes through focus?
What would be the path of reflected light if an incident ray passes through focus? An incident ray passing through the focus will be reflected parallel to the principal axis. Why the light ray retraces its path when it passes through Centre of curvature? Answer: The reason for light falling on the centre of curvature […]
What do u mean by consumer equilibrium?
What do u mean by consumer equilibrium? Consumer’s equilibrium is a situation when a consumer spends his given income on the purchase of one or more commodities in such a way that he gets the maximum satisfaction and has no urge to change the level of consumption, given the prices of commodities. How does consumer […]
How do I find carrier frequency?
How do I find carrier frequency? The carrier frequency can then be calculated as 2X99/100×1/100 which approximates to 1 in 50. Thus a rough approximation of the carrier frequency can be obtained by doubling the square root of the disease incidence. For an X-linked disorder the frequency of affected males equals the frequency of the […]
Is a pencil sharpener a system?
Is a pencil sharpener a system? why a pencil SHARPENER consists of 2 simple machines: The old fashioned pencil sharpeners that are mounted to the wall and cranked by a handle are an example of a compound machine that consists two simple machines: the wheel and axle and a wedge. What type of lever is […]
What are the 8 steps in scientific method?
What are the 8 steps in scientific method? That procedure is commonly called the scientific method and consists of the following eight steps: observation, asking a question, gathering information, forming a hypothesis, testing the hypothesis, making conclusions, reporting, and evaluating. How do you design an experiment to test a hypothesis? Experimental design means creating a […]
What is the face of the clock called?
Can we still recover lost Biodiversities?
Can we still recover lost Biodiversities? Yes, we can recover it. But not the same as before. Maybe we will make a new one. By planting trees and cleaning the area. How does an ecosystem be able to recover from any disturbances? The major mechanisms of recovery in such ecosystems are primary and secondary succession. […]