Question

18) Case study-II
Lateral surface of a cube or cuboid =Base perimeter x Height
Total surface area of a cube of Cuboid = LSA + Base area
A cuboidal box is 30cm long, 25cm wide and 25cm high. Another cubical box has each edge 5cm
i) LSA of cuboidal box is
a) 2570 cm
b) 2750 cm
c) 2350 cm
d) 2530 cm
ii) TSA of cuboidal box is
a) 4250 cm
b) 4520 cm
c)4550 cm
d) 4000 cm
111) LSA of cubical box is
a) 50 cm?
b) 10 cm
c)100 cm
d) 500 cm
iv) TSA of cubical box is
a) 125 cm?
b) 120 cm
c) 140 cm
d) 150 cm
v) LSA of cuboid is
a) 2(lb+bh+hl) b) 2h(lxb)
c) Ixb
d) 2h(+b)

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Answer 1

Answer:

Generally, a power system operates under a steady-state condition. However, transients are initiated due to disturbances like switching, occurrence of short-circuit faults or lightning discharge which may result in current and voltages higher in magnitude as compared to those in steady-state conditions.