Category: Engineering

What is the transfer function of Butterworth low pass filter of order 2? Second Order Butterworth Filter Transfer Function: 2.78. At the cut off frequency fH, the gain is 0,707 Af i,e. 3 dB down from its 0 Hz level. After, fH ( f > fH ) the gain rolls off at a frequency rate […]

Will soffit vents prevent ice dams? Houses with good attic ventilation generally do not experience ice dams, and the physics are quite simple: By circulating cool outside air in the attic space (or in the rafter spaces just below the roof deck), the roof surface remains below freezing and cannot melt the snow on the […]

Is Travelling salesman problem NP-complete? In fact, TSP belongs to the class of combinatorial optimization problems known as NP-complete. This means that TSP is classified as NP-hard because it has no “quick” solution and the complexity of calculating the best route will increase when you add more destinations to the problem. What is the difference […]

How do you find the voltage across a capacitor in series? Two or more capacitors in series will always have equal amounts of coulomb charge across their plates. As the charge, ( Q ) is equal and constant, the voltage drop across the capacitor is determined by the value of the capacitor only as V […]

What is the mechanical disadvantage of a 2nd class lever? When a lever’s load arm is longer than its effort arm, it is said to be at a mechanical disadvantage. It has a low load force to effort ratio. It cannot produce the same load force to effort ratio as a second class lever. How […]

What other jobs can welders do? The following are seven welding careers you may not have thought of: Assemblers and Fabricators: Boilermakers: Jeweler, Precious Stone, and Metal Workers: Machinists, Tool, and Die Makers: Sheet Metal Workers: Plumbers, Pipefitters, and Steamfitters: Metal and Plastic Machine Workers: How do you protect yourself from welding fumes? How can […]

What causes clear cutting? Soil erosion is caused by poorly laid out road systems, whether or not the forest is clearcut or only partially cut. Clearcutting can be done without significant erosion or sedimentation if roads are pre-planned and built correctly by using accepted Best Management Practices to protect streams. What are the pros and […]

What is the most common cause of scored brake drums? Scored Brake Drums This condition is caused by interference between the hub and drum mounting surface during installation as a result of using the wrong drum for the application or improperly cleaning the hub piloting surface prior to drum installation. What causes brake drums to […]

Why FET is called field effect transistor? Field effect transistors (FETs) work on a pricipal that uses the field produced by the gate in a way that makes the channel conduct more or less. The FET was named such because the of how the static field, as apposed to current, plays a central role in […]

What are the load factors of dead load and live load? Load combinations For example, in designing a staircase, a dead load factor may be 1.2 times the weight of the structure, and a live load factor may be 1.6 times the maximum expected live load. What is the LRFD method? Load and Resistance Factor […]