Category: Engineering

What is ductility in stress strain curve? The ductility is the percent elongation at failure and indicates that the general ability of the material to be plastically deformed. The toughness is used to describe the combination of strength and ductility. This is defined as total area under the stress-strain curve. What is the difference between […]

What is used for getting input from the user in JavaScript? JavaScript has a few window object methods that you can use to interact with your users. The prompt() method lets you open a client-side window and take input from a user. For instance, maybe you want the user to enter a first and last […]

Why do we sample a signal? To convert a signal from continuous time to discrete time, a process called sampling is used. The value of the signal is measured at certain intervals in time. If the signal contains high frequency components, we will need to sample at a higher rate to avoid losing information that […]

In which class of lever is the output force between the fulcrum and input force? second Which describes a third class lever system? Describe a third class lever. The effort force lies closer to the axis of the lever than the resistance, and the force arm is smaller than the resistance arm. Where is the […]

What is liquid limit and plastic limit of soil? Liquid Limit (LL) is the water content at which soil changes from a plastic to a liquid state when the soil specimen is just fluid enough for a groove to close when jarred in a specified manner. Plastic Limit (PL) is the water content at the […]

How do you calculate relative humidity with a psychrometer? A sling psychrometer can be used to find relative humidity, which is expressed as a percentage. It is computed by multiplying the amount of moisture in the air at a given temperature, dividing by the maxi- mum amount of moisture the air could contain at that […]

How much work does the electric field do in moving a proton? The electric field does work on the proton much like the gravitational field does work on a mass. A mass falls from high potential to low potential, like a positive test charge in an electric field. When a proton moves in a direction […]

How do you calculate heat loss through insulation? To calculate the heat loss from flat surfaces, calculate the surface area. Figure 3. Pipe heat loss is based on watts per linear foot rather than the entire pipe area, so the mean insulation area for one linear foot of pipe is calculated. How do you calculate […]

Does negative pressure respirator brings fresh air to you through a hose? An example of a negative pressure respirator is the disposable N95 filtering face-piece respirator. Therefore, a negative pressure respirator brings fresh air to you through a face-piece, not through a hose. What does a negative pressure respirator do? A negative pressure device depends […]

Why must the charge in the combustion chamber be compressed before ignition? The charge is the volume of compressed air-fuel mixture trapped inside the combustion chamber ready for ignition. Compressing the air-fuel mixture allows more energy to be released when the charge is ignited. Intake and exhaust valves must be closed to ensure that the […]