T2 Part 2 Flashcards
The term GLS means
General lighting service
A current flowing towards the viewer in a cross section of a conductor is
shown in a diagram by
A dot
Links are used across the joints of metallic trunking to
Maintain the continuity of the exposed conductive parts
What would be the effect of bringing the north seeking poles of two
magnets close together the magnetic fields would?
Repel each other
Extra low voltage cables may be run in a steel trunking along with low
voltage cables provided that is :
They are run in separate compartments
within the trunking
Flemings right hand rule is used the direction of field current and force in
A Generator
The B type MCB will operate magnetically at
3-5 times its rated current
A single-phase motor “hums” but fails to start. One practical test is to check for the:
Continuity of the stator windings
One of the main functions of a contactor is to ?
Provide no volt protection
When threading conduit, the die should be turned in an anti-clockwise
direction at frequent intervals in order to :
Break up the swarf
The voltage between any conductor and earth is. :
346 Volts
The C type MCB will operate magnetically at :
5-10 times its rated current
The tables which give the continuous current carrying capacity of cables in
the ETCI rules are based on an ambient temperature of :
30°C
The maximum voltage allowed for portable hand tools used on a construction sites is :
115 volts
A Continuity test on a Pvc conduit would read. :
Infinity
