Category: Engineering

When should a valve spring be replaced? Valve springs can last a long time, but they do wear. On higher mileage engines with 100,000 miles or more, it is not uncommon for the valve springs to lose tension. Springs that have lost more than 10% of their tension should be replaced. What should valve springs […]

Do ladders need to be inspected? In most cases, ladders should be replaced rather than repaired. They must be inspected regularly to ensure that they are in safe condition. Why ladders must be visually inspected before can be used? Always visually inspect ladder feet to ensure that foot pads and feet assembly are present and […]

How do you find the cross-sectional area of copper wire? ρ=RAl. The cross-sectional area of the wire A is the area of a circle of radius r, or of diameter d = 2r: A=πr2=π(d2)2. How do you calculate cross-sectional resistance? resistivity = resistance × area / length b) A wire made of a copper alloy […]

What are the ranks in Nigeria Air Force? Nigerian Air Force ranks and salary Trainee: N10,237. Aircraftman woman: N53,892. Lance Corporal: N55,832. Corporal: N58,634. Sergeant: N69,261. Flight Sergeant: N87,119. Warrant Officer: N101,974. Master Warrant Officer: N165,697. What are the ranks in the Australian air force? Air Force Air Chief Marshal. ACM. Air Marshal. AIRMSHL. Air […]

How does a heater warm up a room by convection? The cooler air stays more dense, but as the hot air loses temperature it becomes more dense causing it to fall. In terms of how this heats a room, this exchange of gas of different density causes a convection current around the room and as […]

How do you calculate drawdown on a well? Use one of the methods described in Chapter 2 to find the depth to water. Step 1: Find the static level. Manually turn off the pump. Step 2: Find the pumping level. Turn on the pump. Step 3: Calculate the drawdown. Calculate the drawdown by subtracting the […]

How many camshafts does a DOHC V6 have? two camshafts How many camshafts does a SOHC V8 have? A SOHC engine has one camshaft per bank of cylinders, therefore a straight engine has a total of one camshaft. A V or flat engine with a total of two camshafts (one per bank of cylinders) is […]

When a line is parallel to both HP and VP Its projection is? Explanation: The projected length on the plane to which it is inclined will always be shorter than the true length. In figure 2, the line AB is parallel to VP and is inclined to HP. The angle of inclination of AB with […]

Is Japan 110v or 220v? Frequency. The voltage in Japan is 100V, which is the lowest in the world and different from the United States (110-120V), Europe and the rest of the world (220-240V). Japan uses a Type A socket which has two rectangular-pins, that are vertical to each other. What voltage is used in […]

What is the condition for maximum power transfer? In electrical engineering, the maximum power transfer theorem states that, to obtain maximum external power from a source with a finite internal resistance, the resistance of the load must equal the resistance of the source as viewed from its output terminals. What is the condition of maximum […]