Answer:
One sheave means that you are using a single drum winder. They are the worst! Double drum winders control easier, brake better and are much more efficient. They save time ( two skips or cages) and can be clutched to perform faster shift transport. A single drum is slow, unbalanced and can be a nightmare if it trips out during hoisting. If the brake system is not perfect it can be a real hairy experience. For a runaway single drum, there is no counterbalance effect. It always runs to destruction. With a double drum, the driver still has a chance to control the winder to a certain extent and he has two sets of brakes to rely on. A single sheave could also mean a shaft with a single compartment. No second means of escape unless there are ladders or stairways. Not a very healthy situation.
Those are just a few points. I am sure much more can be said in favor of a double drum winder and two or more sheaves in the headgear. Most of the shafts I have worked at have multiple winders and up to ten compartments. They all have a small single drum service winder for emergencies and moves of personnel during shift times. They are referred to as the Mary - Annes. Apparently, the name originated in the U.K. where an aristocratic mine owner named the first such winder after his mistress.
Explanation:
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Explanation:
analogue computer is in computer which is used to process analogue data.
Analogue computer were widely used in scientific and industrial application
Answer: A flowchart is a graphical representation of decisions and their results mapped out in individual shapes.
Explanation:
These shapes were first developed by Herman Goldstine and John von Neumann in the 1940s.
Flowcharts can provide a step-by-step diagram for mapping out complex situations, such as programming code or troubleshooting problems with a computer.
Answer: 1)System Palette
Explanation: System palette is kind of palette found in the system which contain the color values that is used by the display.This palette is also drawing of the devices and applications.But the application don't get the direct access to the system palette rather logical palette permits it.
They work on the basis of the properties carried from the Back color and Fore color.Other palettes mention in the option is incorrect because these palettes don't work for the operating system's display .Thus the correct option is option(1).
