MGVCL Exam Paper (30-07-2021 Shift 2)
Operating system is

a program that runs during log off
a layer between the user and the hardware
a program that runs for short duration
a program that runs during log off

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MGVCL Exam Paper (30-07-2021 Shift 2)
In a 3-phase, 4-wire, 400/230 V system, a lamp (L1) of 100 W is connected to one phase and neutral and a lamp (L2) of 150 W is connected to the second pahse and neutral. If the neutral wire is disconnected accidently, then

100 W lamp (L1) becomes brighter and 150 W lamp (L2) becomes dim
both 100 W lamp (L1) and 150 W lamp (L2) becomes brighter
100 W lamp (L1) becomes dim and 150 W lamp (L2) becomes brighter
both 100 W lamp (L1) and 150 W lamp (L2) becomes dim

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MGVCL Exam Paper (30-07-2021 Shift 2)
A circular loop has its radius increasing at a rate of 2 m/s. The loop is placed perpendicular to a constant magnetic field of 0.1 Wb/m². When the radius of the loop is 2 m, the emf induced in the loop will be

zero
0.8π V
0.4π V
0.2π V

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MGVCL Exam Paper (30-07-2021 Shift 2)
નીચે માંથી ક્યાં રુઢિપ્રયોગનો અર્થ 'છેતરવું' એવો થાય

આડા ઉતરવું
બે પાંદડે થવું
હથેળીમાં ચાંદ દેખાડવો
દસ મારવો

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

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

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