Is burning of wood a convection? Wood burning fires transfer heat in the same way as many modern heating appliances. These include convection, which is a transfer of heat through air currents. Conduction is a transfer of heat through solid objects such as the ground or the bricks in a fireplace wall. What are the […]
What is a datum feature symbol?
What is a datum feature symbol? The previewed Datum Feature Symbol consists of the frame, triangle, and leader connecting to the frame. You must select a surface reference to place the datum feature symbol to the surface at the selected point in the annotation plane that is currently active. What is a datum on a […]
Do natural gas furnaces need a chimney?
Do natural gas furnaces need a chimney? But here’s a piece of interesting news: you may not need a chimney at all. Today’s gas furnaces operate super-efficiently, so they use an entirely different type of furnace venting system. Here’s how it works and what options you have if you choose to forego chimney repairs. Can […]
What is the function of low pass filter?
What is the function of low pass filter? A low-pass filter (LPF) is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency. The exact frequency response of the filter depends on the filter design. How many dB is a watt? […]
What happens when a preferred stock is called?
What happens when a preferred stock is called? A callable preferred stock issue offers the flexibility to lower the issuer’s cost of capital if interest rates decline or if it can issue preferred stock later at a lower dividend rate. The proceeds from the new issue can be used to redeem the 7% shares, resulting […]
When was the rocket engine invented?
When was the rocket engine invented? M Who invented the first rocket engine? Konstantin Tsiolkovsky Why does NASA use countdowns? Countdown clocks allow technicians and astronauts to synchronize their moves throughout a rocket launch sequence, from T-minus 43 hours all the way until the final ignition. The clock also serves as the visual version of […]
What is viscoelastic creep?
What is viscoelastic creep? Viscoelastic creep When subjected to a step constant stress, viscoelastic materials experience a time-dependent increase in strain. This phenomenon is known as viscoelastic creep. At time , a viscoelastic material is loaded with a constant stress that is maintained for a sufficiently long time period. What is creep and stress relaxation? […]
How does a resistor affect voltage?
How does a resistor affect voltage? The larger the resistor, the more energy used by that resistor, and the bigger the voltage drop across that resistor. Also, Kirchhoff’s circuit laws state that in any DC circuit, the sum of the voltage drops across each component of the circuit is equal to the supply voltage. What […]
What is the most widely used arc welding process in the world?
What is the most widely used arc welding process in the world? Gas Metal Arc Welding (GMAW/MIG) This style of welding is also referred to as Metal Inert Gas (MIG). It uses a shielding gas along the wire electrode, which heats up the two metals to be joined. This method requires a constant voltage and […]