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WorksheetsQuiz on Table
Total questions: 20
Worksheet time: 34mins
What is the current carrying capacities of buried direct 16mm2 two-core sheathed Aluminium cable ?
125
97
95
94
73
What is the current carrying capacities of buried direct 16mm2 three-core and four core Copper (Cu) cable ?
106 A
97 A
95 A
94 A
73 A
What is the current carrying capacities of underground wiring encloser -10mm2 -three core and four core-Flexible Copper (Cu) cable ?
61 A
97 A
95 A
59 A
73 A
What is the current carrying capacities of Completely surrounded by thermal insulation, in a wiring enclosure , 1mm2 two-core sheathed Copper(Cu) cable ?
13
11
8
7
19
What is the current carrying capacities of Wiring enclosure in air -2.5 mm2 -three core and four core-Solid/Stranded Copper (Cu) cable ?
22 A
23 A
18 A
19 A
24 A
What is the rating factor if CABLES BURIED DIRECT IN GROUND OR IN UNDERGROUND WIRING ENCLOSURES , conductor and soil ambient temperature are respectively 75 and 15 ?
1.04
1
,95
.91
.86
What is the rating factor if CABLES BURIED DIRECT IN GROUND OR IN UNDERGROUND WIRING ENCLOSURES , conductor and soil ambient temperature are respectively 80 and 25 ?
1.04
1
.92
.91
.86
What is the rating factor if CABLES IN AIR OR HEATED CONCRETE SLAB, conductor and air ambient temperature are respectively 75 and 45 ?
1.04
1
.92
.80
.86
What is the rating factor if CABLES IN AIR OR HEATED CONCRETE SLAB, conductor and air ambient temperature are respectively 80 and 25 ?
1.04
1.06
.92
.80
.86
What is the three-phase voltage drop (Vc) if conductor size and temperature are respectively 4 mm2 and 75 °C ?
8.77
9.24
9.71
10.2
To convert to single-phase values of Vc, multiply the three-phase value by
1
1.1
1.155
1.177
In simplified method, for 10 mm2 cable, what is the voltage drop(Am per %Vd) for single phase(230 V)?
515
45
70
205
What is the maximum route length for 2.5 mm2 cable, protective device rating 16 A and C type Circuit Breaker ?
160
128
85
136
What is the maximum route length for 1.5 mm2 cable, protective device rating 10 A and Fuse ?
170
128
85
136
What is the maximum route length for 16 mm2 cable, protective device rating 63 A and C type MCB ?
170
128
76
136
For domestic, 41 lighting points of 10 Watt each and 20 power sockets of 10 A, what should be maximum demand ?
17 A
30 A
35 A
40 A
For shop, 5 lighting points of 100 W single phase , what should be maximum demand ?
1.73 A
2.73 A
3.73 A
2.17 A
For Type C Circuit Breaker , what is Rph-e value for 1 mm2 cable with protective device rating of 10A ?
1.96
3.28
1.64
1.18
For Fuse , what is Rph-e value for 16 mm2 cable with protective device rating of 63 A ? (Table 8.2)
1.96 Ohm
3.28 Ohm
0.36 Ohm
1.18 Ohm
For domestic wiring, what should be the Maximum demand(I) for 2300 watt Storage water heaters ? (Table C1)
7 A
8 A
9 A
10 A
