Category: Engineering

What causes tides high and low? They are caused by the gravitational forces exerted on the earth by the moon, and to a lesser extent, the sun. When the highest point in the wave, or the crest, reaches a coast, the coast experiences a high tide. When the lowest point, or the trough, reaches a […]

How do you pass a variable from one class to another? You can create the object of one class and using this object you call other class variables and methods, but make sure the accessiblity will be as public. We can use interface class A and by implementing A into B, can use the variable […]

What was the leading source of energy in the United States in 2017? “The three major fossil fuels—petroleum, natural gas, and coal—combined accounted for about 77.6% of the U.S. primary energy production in 2017: Natural gas: 31.8% Petroleum (crude oil and natural gas plant liquids): 28% Coal: 17.8% What is US electricity generation by energy […]

What is a Class 3 thread? Class 3 threads are tight tolerance threads that have no allowance and have very tight tolerances. Class 3 threads are often specified for tight tolerance fastener applications in critical use situations where safety and strength are a primary concern, such as the aerospace industry. What are 3 types of […]

How do you calculate ice melting rate? Using the equation for a change in temperature and the value for water from Table 1, we find that Q = mLf = (1.0 kg)(334 kJ/kg) = 334 kJ is the energy to melt a kilogram of ice. This is a lot of energy as it represents the […]

Is reliability a probability? Reliability is defined as the probability that an item will perform a required function without failure for a stated period of time. Another way to state is that It’s a measure of how long it takes for a network (or a system) to fail. So why Reliability is defined in terms […]

How does film boiling differ from nucleate boiling? Film boiling is a post critical heat flux (CHF) regime with a high surface temperature. Nucleate boiling is a type of boiling which occurs when the surface temperature is hotter than the saturated fluid temperature by a certain amount. In this type of boiling, the heat flux […]

What is a glass cullet? Crushed glass also known as glass cullet refers to waste glass produced as a result of breakage and rejection on quality control grounds during the manufacturing process. What is a Cullet? : broken or refuse glass usually added to new material to facilitate melting in making glass. What can be […]

Where do most pedestrian fatalities occur? Most pedestrian deaths occur in urban areas, at non-intersection locations, and at night. Where do more than 50 percent of pedestrian motorist crashes occur? More than 50 percent of the combined total of fatal and injury crashes occur at or near intersections. In what situations are pedestrians most likely […]

What is propagation delay in ripple counter? The effective propagation delay in a ripple counter is equal to the sum of propagation delays due to different flip-flops. An increased propagation delay puts a limit on the maximum frequency used as clock input to the counter. What is a ripple counter? Ripple counter is a special […]