MGVCL Exam Paper (30-07-2021 Shift 2)
In circuit breaker, the term MCCB stands for

miniature case circuit breaker
miniature compact circuit breaker
modern closed circuit breaker
moulded case circuit breaker

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MGVCL Exam Paper (30-07-2021 Shift 2)
The wind speed increases with height because of

reduction in the gravitational force
reduction in lift effect of the air
enhancement of drag effect on the earth surface
reduction of drag effect of the earth surface

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MGVCL Exam Paper (30-07-2021 Shift 2)
The line currents in amperes in phases a, b and c respectively are 500 +j150, 100 – j600 and – 300 + j600 referred to the same reference vector with phase sequence of abc. Find the symmetrical component of currents.

Ia₀ = (100+j50) AIa₁ = (146.41+ j65.47) AIa₂ = (546.41-j165.47) A
Ia₀ = (100+j50) AIa₁ = (200+ j107.75) AIa₂ = (200-j107.75) A
Ia₀ = (100+j50) AIa₁ = (546.41+ j165.47) AIa₂ = (546.41-j165.47) A
Ia₀ = (100+j50) AIa₁ = (546.41+j165.47) AIa₂ = (-146.41-j65.47) A

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a power network, 400 kV is recorded at a 415 kV bus. A 50 MVAR, 415 kV shunt reactor is connected to the bus. What is the reactive power absorbed by the shunt reactor?

56.45 MVAR
66.45 MVAR
76.45 MVAR
46.45 MVAR

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MGVCL Exam Paper (30-07-2021 Shift 2)
When different types of consumers are charged at different uniform per unit rates, it is called as ____

two-part tariff
maximum demand tariff
flat rate tariff
block rate tariff

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MGVCL Exam Paper (30-07-2021 Shift 2)
The voltage applied to a transformer primary is increased keeping V/f constant. With this, the core loss ____ and the magnetizing current (Im) ____

increases, remains constant
decreases, increases
remains constant, decreases
increases, increases

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