Category: Engineering

Why do boats and ships have streamlined shape? The aeroplanes and ships have streamlined shaped bodies to reduce drag. The streamlined shaped body experiences minimum resistance when travelling through water or air. It helps to reduce friction. Why does a ship have streamlined body? The aeroplanes and ships have streamlined shaped bodies because they travel […]

What are the main components of an engine? Let’s take a look at the main parts of the engine. Engine block. The block is the main part of the engine. Pistons. Pistons pump up and down as the spark plugs fire and the pistons compress the air/fuel mix. Cylinder head. Crankshaft. Camshaft. Valves. Oil pan. […]

What products can be made from recycled aluminum? Aluminum can be recycled into a lot of different products such as tractor trailer and car bodies, however, aluminum cans usually become new aluminum cans. Recycling aluminum does not reduce the quality of the metal, so it can be recycled indefinitely. What is the step by step […]

What is Multirange voltmeter? The moving coil multi-range voltmeter can be used to measure A.C. as well as D.C. voltages. To measure the voltage, select the desired voltage range and toggle the switch to choose between AC and DC. How do you make a digital voltmeter? Diy digital voltmeter panel meter 0-50V Figure 1 is […]

What is V4 in ECG? On a right-sided ECG, V1 and V2 remain on the same place. V3 to V6 are placed on the same place but mirrored on the chest. So V4 is in the middle of the right clavicle. The ECG should be marked as a Right-sided ECG. V4R (V4 but right sided) […]

What are the advantages and disadvantages of presenting? You may want to add paragraphs to explain further advantages or disadvantages, but there should be only one main idea in each main body paragraph. Don’t list all of your advantages/disadvantages in one paragraph…. Introduce the disadvantage (topic sentence) Explain/give detail. Example. What are advantages and disadvantages […]

How much water do I need to fill my pool? Length x width x depth x 7.5 = volume (in gallons) Length times width gives the surface area of the pool. Multiplying that by the depth gives the volume in cubic feet. Since there are 7.5 gallons in each cubic foot, multiply the cubic feet […]

What is dislocation strengthening mechanism? For this strengthening mechanism, solute atoms of one element are added to another, resulting in either substitutional or interstitial point defects in the crystal (see Figure 1). The solute atoms cause lattice distortions that impede dislocation motion, increasing the yield stress of the material. How can I strengthen my alloys? […]

How do you calculate mass flow rate of refrigerant? Basic Calculations Refrigerant mass flow rate (kg/s) (9.6) r = Q e / h 1 − h 4. Compressor isentropic power (kW) (9.8) r h 2 − h 1. Heat rejected in condenser (kW) (9.9) h 2 − h 3. What is mass flow rate in […]

Why offset nulling is used in op amp? Implementing offset null within the op amp The op amp offset null circuitry adds a balance capability to the input circuitry as shown in the example of the 741 op amp input stage. The op amp offset null connections enable the input circuit balance to be obtained […]