by Sunday | Oct 1 | NABTEB QUESTIONS
There are THREE types of losses in a.d.c. motor: Iron loss, copper loss and mechanical loss. i. Iron loss:- These are losses arising from the magnetic circuit of the machine and are of two types namely eddy current and hysteresis losses. ii. Copper Loss: These losses...
by Sunday | Oct 1 | NABTEB QUESTIONS
These faults were reported to have occurred on a D.C. Motor. a. Failure to start. b. Sparking brushes. S/No FAULT CAUSE REMEDY (a) Failure to start i. Open circuit on starter resistance. Ii. Open circuit on-field circuit. Change the starter resistance. Rewind the...
by Sunday | Oct 1 | NABTEB QUESTIONS
a. Crampets: Crampets are only used to secure conduit in conditions where the conduit is to be covered in concrete or plaster. b. Spacer bar saddles: This consists of two parts, a saddle abd 3 mm thick base plate. The base plate has a slot in the center which is...
by Sunday | Oct 1 | NABTEB QUESTIONS
The purpose of the verification of polarity test is to check that the phase conductor is taken through the fuse and the switch to the appliance.
by Sunday | Oct 1 | NABTEB QUESTIONS
The term “Olive” as used in connection with the MICC cable means compression ring and slip gland nut.
by Sunday | Oct 1 | NABTEB QUESTIONS
Stroboscopic effect is the effect which the flictering of a discharge lamp has on moving machinery.