by Sunday | Oct 1 | NABTEB QUESTIONS
1. Power consumption is low 2. Require less voltage for operation 3. Cheap 4. It generates less heat 5. Long life span 6. Very small size 7. There is little distortion i.e. output wave shape is exactly similar to the input wave shape, though much...
by Sunday | Oct 1 | NABTEB QUESTIONS
1. A semiconductor is a substance which has resistivity (10^-4 to 0.5Ωm) in between conductors and insulators e.g. germanium, silicon, selenium, carbon e.t.c 2. It is a substance which has almost filled valence band and nearly empty conduction band with a very small...
by Sunday | Oct 1 | NABTEB QUESTIONS
The possible observations for worn-out ball bearings are: (i) Broken balls. (ii) Undue Noise. (iii) Dry Lubricant. (iv) Low Grease Content. (v) Poor Clearance between ball bearings and shaft.
by Sunday | Oct 1 | NABTEB QUESTIONS
The causes of sparking of commutator segments are: (i) Shorted armature. (ii) High Mica. (iii) Worn-out Brushes. (iv) Dirty Commutator. (v) Armature Reaction. (vi) Overloading. (vii) Wrong position of brushes. (viii) Earthed armature...
by Sunday | Oct 1 | NABTEB QUESTIONS
Under cutting of a commutator is defined as the reduction of mica protrusion between commutator segments using a saw blade/cutting of the common insulation (mica) below the commutator bars.
by Sunday | Oct 1 | NABTEB QUESTIONS
Armature reaction is defined as the distortion of the main field due to the current flowing in the armature conductor.
Land Law and the Consequences of Unauthorized Land Transfers in Nigeria
Original price was: ₦1,000.00.₦300.00Current price is: ₦300.00.