Category: Engineering

What is lower triangular matrix with example? In the mathematical discipline of linear algebra, a triangular matrix is a special kind of square matrix. A square matrix is called lower triangular if all the entries above the main diagonal are zero. Similarly, a square matrix is called upper triangular if all the entries below the […]

What does a pitot static tube measure? Basically, a pitot tube is used in wind tunnel experiments and on airplanes to measure flow speed. It’s a slender tube that has two holes on it. The side hole measures the static pressure. By measuring the difference between these pressures, you get the dynamic pressure, which can […]

What is heat rate in powerplant? Heat rate is one measure of the efficiency of electrical generators/power plants that convert a fuel into heat and into electricity. The heat rate is the amount of energy used by an electrical generator/power plant to generate one kilowatthour (kWh) of electricity. If the heat rate is 7,500 Btu, […]

How do you calculate the pitch diameter of a spur gear? First, you need to define a series of concepts to perform the spur gear calculations: The number of teeth (z). Module (m). Pitch Diameter (d) is the diameter of the pitch circle; its value is: d = m x z. Outside Diameter (de) is […]

How do you find the angular acceleration of a rod? 3 Answers Sum of the forces on body equals mass times acceleration at the center of gravity. ∑i→Fi=m→aC. Ax=maxAy−mg=may. Sum of torques about center of gravity equals moment of inertia times angular acceleration. ∑i(→Mi+(→ri−→rC)×→Fi)=IC→α Acceleration of point A must be zero. →aA=→aC+→α×(→rA−→rC)+→ω×(→vA−→vC) How do you […]

What material is helmet made of? Styrofoam and Koroyd Also known as Expanded Polystyrene (EPS), Styrofoam is one of the most popular materials used for the inner lining in a helmet. It is also commonly known as thermocol and has always been reliable considering its impact-absorbing qualities. What are motorcycle helmets made from? The common […]

How does a PLC operates based on a scan cycle? The scan cycle is the cycle of which the PLC gathers the inputs, runs your PLC program and then updates the outputs. This will take some amount of time often measured in milliseconds or ms. The amount of time it takes for the PLC to […]

What are the requirements for ventilation? From the view point of comfortable living & working conditions, the good and efficient ventilation system should meet the following functional requirements: Rate of Supply of Fresh Air. Air movements or Air Changes. Temperature of Air. Humidity. Purity of Air. Why is proper ventilation important? Ventilation helps your home […]

How do you find the speed of a transverse wave? Key Points The type of wave that occurs in a string is called a transverse wave. The period of a wave is indirectly proportional to the frequency of the wave: T=1f T = 1 f . The speed of a wave is proportional to the […]

Why strain gauge is used in a bridge configuration? Strain gauge resistance changes are typically measured in a bridge circuit, to allow for precise measurement of the small resistance changes, and to provide compensation for resistance variations due to temperature. Which strain gauge gives exhibits the highest sensitivity? The single-crystal silicon flexible strain gauge offers […]