UNIT 264: Mock Paper 4

Full form of PILCSTA on cables

• Paper insulated lead covered steel wire armoured

• Plastic insulated lead covered steel wire armoured

• Paper insulated lead covered steel tape armoured

• Paper insulated laminated copper steel tape armoured

2. 3c 300 SAC XLPE 11KV on a cable record means

• 3 core 300sqmm Copper unsheathed 11KV

• 3 x 1 core 300sqmm Aluminium lead sheathed 11 KV

• 3 Core 300sqmm Solid Aluminium Conductor 11KV

• 3Core 300sqmm Stranded Copper Conductor 11KV

When is a circuit main earth applied to an overhead line?

• After the issue of a safety document

• Before the issue of a safety document

• Before the line is isolated

• After the additional earths have been applied

Electrolytic action takes place:

• Where dissimilar metal conductors are used

• A reaction inside an overhead line transformer

• The amount of current a conductor can hold

• A low resistance joint

What is the minimum open ground clearance for an LV overhead line?

• 6.4m

• 5.2m

• 2.8m

• 4.2m

Why are stockbridge dampers used on the overhead line steel towers?

• To reduce damage due to lightening

• To increase conductor strength

• To increase insulator resistance

• To reduce damage due to vibration

When handling cold pour resins the mandatory PPE would be

• Overalls and eye protection

• Disposable gloves and breathing apparatus

• Breathing apparatus and overall

• Eye protection and disposable gloves

Cable spiking minimizes the risk of.

• moisture

• flashover

• Results in deterioration

• puncture

The full form of PILCSWA in Underground cables refers to

• Plastic insulated lead covered steel wire armoured cable

• Plastic insulated laminated copper steel wire armoured cable

• Paper insulated lead covered steel wire armoured cable

For lightening protection, a simple form of supply system mounted on pylons would be

• A surge diverter

• An expulsion gaps

• A surge inverter

• An over-running earth wire