What are cooling curves used for? A cooling curve of a substance is a graph of the variation of the temperature with time as it is allowed to cool. The gradient of the cooling curve is related to the heat capacity, the thermal conductivity of the substance, and the external temperature. How is a phase […]
What is performance bond insurance?
What is performance bond insurance? Performance Bond When a contract is awarded to a contractor to undertake construction work for the obligee, the contractor is required to post a bond which will guarantee that the principal (the contractor) will perform the job according to the terms and condition of the contract and within the period […]
How do you calculate relative humidity with a psychrometer?
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?
How do you calculate heat loss through insulation?
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 […]
Why do we sample a signal?
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?
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?
What is stress and strain in materials?
What is stress and strain in materials? Stress is the force applied to a material, divided by the material’s cross-sectional area. σ = stress (N/m2, Pa) F = force (N) A0 = original cross-sectional area (m2) Strain is the deformation or displacement of material that results from an applied stress. What is stress strain curve […]
What is the effect of high temperatures on material property?
What is the effect of high temperatures on material property? Stress-strain diagrams are obtained at specific temperatures. High temperature reduces material stiffness and strength, while low temperature increases material stiffness and strength. Almost all materials creep over time if exposed to elevated temperatures under applied load. How does increased temperature affect the performance of metals? […]