Explanation

• Ctrl + Shift + D applies double underline to selected text in MS Word.

Additional information:

• Ctrl + U — Single underline
• Ctrl + Shift + W — Underline words only
• Ctrl + B — Bold
• Ctrl + I — Italic

Last verified on 25-08-2026

Explanation

• CPU processes instructions, performs calculations, and controls computer operations.
• The CPU is the main processing unit of a computer.
• It is often called the “brain of the computer.”
• The CPU includes major components such as the ALU, Control Unit, and registers.

Last verified on 24-08-2026

Explanation

• CPU (Central Processing Unit) = the brain of a computer.
• It processes data and instructions.
• It controls the computer’s operations.
• It follows instructions from computer programs.

Explanation

• The command used in AutoCAD to make round edges is the Fillet command
• Shortcut: F → Enter.
• It creates a curved connection with a specified radius.
• It is commonly used for rounding the corners of lines, arcs, polylines, and other objects.

Explanation

• AutoCAD Civil 3D is widely used for road and highway geometric design.
• It can create horizontal and vertical alignments.

Explanation

• The ARC command is used to draw an arc in AutoCAD.
• It is available under the Draw menu.
• Arc can be created using different methods and parameters.
• It is commonly used in 2D drafting.

Explanation

• EXTRUDE converts a 2D closed object into a 3D solid or surface.
• It extends the object along the Z-axis.
• It is commonly used to create 3D models from 2D profiles.
• For example, a 2D circle can be extruded to create a 3D cylinder.

Explanation

• A projector is an output device used to display video images on a large screen.
• It receives video signals from a computer or other device.
• Projectors are commonly used in classrooms, offices, and presentations.

Additional information:

• A scanner is an input device used to digitize documents and images.
• A printer produces a hard copy of digital information.

Last verified on 12-08-2026

Explanation

• A computer is an electronic device that accepts, processes, stores, and produces information by executing a set of stored instructions.
• A computer works according to stored instructions, called a program.
• It performs both arithmetic and logical operations.
• It follows instructions sequentially, unless the program specifies a different sequence.
• The basic process is Input → Processing → Output → Storage.

Last verified on 11-08-2026

Explanation

• The CPU (Central Processing Unit) is the brain/heart of the computer.
• It processes data and executes instructions.
• It controls other parts of the system.

Additional information:

• First commercial CPU: Intel 4004 (1971)
• Invented by: Italian physicist Federico Faggin
• CPU Examples: Clock speeds – 3.0 GHz, 3.5 GHz, 4.0 GHz, 4.5 GHz, 5.0 GHz

Last updated by NA on 09-09-2026