NABTEB

Name THREE equipment that uses vacuum tube electronic in homes and explains how one of them works. – NABTEB QUESTION

Equipment that use vacuum tube in the homes: 1. Television 2. Rectifiers 3. Amplifiers 4. Radio 5. Computer Monitor [Items…

4 years ago

Compare and contrast ‘Solid State’ electronic devices with ‘Vacuum tube’ electronic devices. – NABTEB QUESTION

Solid State Devices Vacuum tube devices Light and portable Heavy and bulky Do not produce too much heat nor noise…

4 years ago

What are bugging devices? State three merits and demerits of their uses. – NABTEB QUESTION

Bugging devices are devices for keeping surveillance of a place, such that conversation there can be monitored. People coming in…

4 years ago

Why is it wrong to call a transistor radio just a transistor? – NABTEB QUESTION

It is wrong to call a transistor radio just a transistor because it comprises many elements, like transistors, diodes, transformer,…

4 years ago

Give three peaceful uses of nuclear reaction and explain their operations. – NABTEB QUESTION

Peaceful uses of nuclear reaction: 1. Medical field for radiotherapy: This uses radioisotopes which are by-products of fission reactions. After…

4 years ago

Name THREE Instruments for detecting radiation from radioactive substances – NABTEB QUESTION

Three instruments for detecting radiation from radioactive substances: -  1. Geiger – Muller tube/rate meter/Dekatron counter. 2. Ionization chamber 3.…

4 years ago

State three differences between the magnetic properties of steel and soft iron. – NABTEB QUESTION

Differences between the magnetic properties of steel and soft iron. Soft iron Steel Easily magnetized Not easily demagnetized Demagnetized Magnetized…

4 years ago

The Lines of a magnetic field do not cross; why? NABTEB QUESTION

The lines of force of a magnetic field do not cross because the line of force is the line along…

4 years ago

Using a magnet of known poles, how can you differentiate between the 2 poles of another magnetic. – NABTEB QUESTION

Suspend the magnet of known poles so that it can swing freely. Next, bring one pole of the other magnet…

4 years ago

What do you understand by the poles of a magnet? – NABTEB QUESTION

The pole of a magnet is that portion of the magnet where its magnetic attraction appears to be strongest.

4 years ago