Tag: science & technology

Quizzes (551) Questions (11015)

Questions Related to science & technology

Multiple choice general knowledge science & technology

Analog computer works on the supply of

  1. Continuous electrical pulses

  2. Electrical pulses but not continuous

  3. Magnetic strength

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Analog computers work with continuous electrical signals that vary in strength (voltage or current) to represent data, unlike digital computers that use discrete binary values (0s and 1s).

Multiple choice general knowledge science & technology

Digital devices are

  1. Digital Clock

  2. Automobile speed meter

  3. Clock with a dial and two hands

  4. All of them
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Digital devices use discrete electronic signals and display numerical values. A digital clock is clearly digital as it shows numbers. An automobile speedometer with a needle is analog, and a clock with hands is also analog since it uses continuous mechanical movement.

Multiple choice general knowledge science & technology

The computer that process both analog and digital is called

  1. Analog computer

  2. Digital computer

  3. Hybrid Computer

  4. Mainframe computer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hybrid computers combine features of both analog and digital computers. They can process continuous signals like analog computers and discrete data like digital computers, making them suitable for specialized applications like simulations and process control.

Multiple choice general knowledge science & technology

Tape speed is measured in

  1. Feet per second

  2. Inch per second

  3. Meter per second

  4. Centimeter per second
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Tape speed is measured in inches per second (IPS) as a standard unit for magnetic tape drives. Feet per second would be too large, and metric units (meters/cm) are not standard for tape drives.

Multiple choice general knowledge science & technology

Which element uses to create a P type semiconductor

  1. Boron

  2. Iron

  3. Silicon

  4. Antimony
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

P-type semiconductors are created by doping with electron acceptors - elements with 3 valence electrons. Boron has 3 valence electrons and creates holes in the silicon lattice when added as a dopant. Silicon is the base semiconductor material, not the dopant. Antimony has 5 valence electrons and is used for N-type semiconductors.

Multiple choice general knowledge science & technology

Which element uses to create a P type semiconductor

  1. Boron

  2. Iron

  3. Silicon

  4. Antimony
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

P-type semiconductors are created by doping with electron acceptors - elements with 3 valence electrons. Boron has 3 valence electrons and creates holes in the silicon lattice when added as a dopant. Silicon is the base semiconductor material, not the dopant. Antimony has 5 valence electrons and is used for N-type semiconductors.