The answer is B. A only. The optimum valve timing is found through experimentation using an engine dynamometer. The timing of the opening and closing of the valves is called valve timing. So the use of dynamometer measures the power output of a machine that is why it can measure the optimum valve timing.
Answer:
A) Map
Explanation:
All gasoline (petrol) fuel systems need ways or method that will be calculating amount of the air that is entering the engine.This is true as regards mechanical fuel injection, carburetors and electronic fuel injection.Speed density system fall under one of this method. "Speed" in this context means the speed of the engine while "density" means density of the air. The Speed is been measured using the distributor, crankshaft position sensor could be used here. The Density emerge from from measuring of the air pressure which is inside the induction system, using a typical "manifold absolute pressure" (MAP) sensor as well as air temperature sensor. Using pieces of information above, we can calculate
mass flow rate of air entering the engine as well as the correct amount of fuel can be supplied. With this system,
the mass of air can be calculated. One of the drawback if this system is that
Any modification will result to incorrect calculations. Speed-Density can be regarded as method use in estimation of airflow into an engine so that appropriate amount of fuel can be supplied as well as. adequate spark timing. The logic behind Speed-Density is to give prediction of the amount of air ingested by an engine accurately during the induction stroke. Then this information could now be used in calculating how much fuel is required to be provided, This information as well can be used in determining appropriate amount of ignition advance. It should be noted The speed density fuel injection system uses the Map sensor as the primary sensor to determine base pulse width
Answer:
The answer is described below
Explanation:
E safety means means protection of private information and personal safety when using the internet. E safety involve the protection of private information, passwords against identity theft or property theft. A persons private information, passwords can be gotten through the use of phishing or malwares.
Also, the use of internet has exposed people to cyber bullying(i.e abuse of an individual), stalking, engaging underage children into sexual relationships and sextortion.
E safety help protect children from harmful content and services as those listed.
CAD provides the architect opportunity to electronically plan and place elements of a building. The correct option among all the options that are given in the question is option "c". The full form of CAD is Computer Aided Design. It gives the designers the opportunity to create three dimensional pictures.
