by Sunday | Oct 8 | NABTEB QUESTIONS
(i) Speed. (ii) Accuracy. (iii) Safety. (iv) Secrecy. (v) Cost. (vi) Distance. (vii) Volume. (viii) Convenience. (ix) Record.
by Sunday | Oct 8 | NABTEB QUESTIONS
(i) Brevity: Avoid wordiness use words with the economy. Be brief. (ii) Standardized: Routine business letters are stereotyped and follow patterns laid down by the firm. (iii) Clarity: Office correspondence should be unambiguous for the reader to understand. (iv)...
by Sunday | Oct 8 | NABTEB QUESTIONS
Advantages of a P-N junction over thermionic valve: i. It is smaller in size ii. It does not require a heater to operate to produce electrons iii. It requires very low voltages to operate; therefore it can be operated with dry cell batteries of few volts. iv. It...
by Sunday | Oct 8 | NABTEB QUESTIONS
(i) Wave nature (a) Electron diffraction/light diffraction (b) Light refraction or reflection Particle nature (a) Photoelectric effect (b) Compton Scattering of X-ray (c) Emission and absorption of light (d) Thermionic...
by Sunday | Oct 8 | NABTEB QUESTIONS
Applications of electromagnets 1. To produce an intense magnetic field in generators and electric motors 2. Used for lifting and transporting heavy iron bearing objects. 3. Can be used to spate ferrous metals from non-ferrous metals. 4. They are used in electric...
by Sunday | Oct 8 | NABTEB QUESTIONS
The relationship between the angle of rotation of a mirror and the angle of deflection of a reflected ray when the incident ray remain stationary is: If the mirror is turned through an angle θ; the reflected ray will turn through 2θ But the angle between the incident...