Voltage is sometimes referred to as EMF, or Electromotive...?
Answer: D
EMF stands for electromotive force.
Despite the name it is not a force but an energy per unit charge, measured in volts. It is the work a source such as a cell or generator does in driving a unit charge round the circuit.
Please log in or register to report this question.
Hardware devices that are not part of the main computer system and are often added later to the system.
Answer: A
Devices outside the main computer, often added later, are peripherals.
They divide into input devices such as the keyboard and scanner, output devices such as the monitor and printer, and storage devices such as external drives.
Please log in or register to report this question.
To select text by shading as you drag the mouse arrow over the text is known as...
Answer: B
Shading text by dragging the mouse over it is highlighting, or selecting.
The selected text becomes the target of the next command - copy, delete, change font - which is the select-then-act principle the graphical interface is built on.
Please log in or register to report this question.
With which of the following all formulas in excel starts ?
Answer: A
Every Excel formula begins with =.
The equals sign tells the program that what follows is to be evaluated rather than stored as text. Without it, =A1+B1 would simply appear in the cell as those characters.
Please log in or register to report this question.
Firmware is stored in -
Answer: D
Firmware is stored in ROM.
It is the software built into a device - the BIOS, a router's operating code, a camera's control program - and must survive without power, which is why it is held in read-only or flash memory.
Please log in or register to report this question.
http://allexamhub.com - is an example of what?
Answer: A
A URL (Uniform {or Universal} Resource Locator) is an address for a specific document found on the Web. It is made up of several components: a domain name, the directories and subdirectories of the site, and the extension. To learn about these parts of a URL, visit the Evaluating Web Sites tutorial.
Please log in or register to report this question.
'.TXT' extension refers usually to what kind of file?
Answer: A
A .TXT file is a plain text file.
It contains characters only, with no formatting, fonts or images, so it can be opened by any program on any system. That universality is why configuration files and program source are kept in it.
Please log in or register to report this question.
The first step to getting output from a laser is to excite an active medium. What is this process called?
Answer: A
Exciting the active medium of a laser is called pumping.
Energy is fed in optically, electrically or chemically to raise more atoms to the upper level than remain in the lower one - a population inversion, without which stimulated emission cannot outrun absorption.
Please log in or register to report this question.
What is full form of TIFF ?
Answer: B
TIFF stands for Tagged Image File Format.
It stores images with lossless compression or none at all, supports layers and multiple pages, and is the standard for scanning, printing and archival photography where quality matters more than file size.
Please log in or register to report this question.
Which is the best search tool for finding Web sites that have been handpicked and recommended by someone else?
Answer: A
Subject directories list sites picked and recommended by people.
Editors evaluate and classify sites by hand, so coverage is small but quality is checked. A search engine indexes mechanically, covering far more but vouching for nothing.
Please log in or register to report this question.
