MGVCL Exam Paper (30-07-2021 Shift 1)
What are the states of the three ideal diodes of the circuit shown in figure ?

D1 ON, D2 OFF, D3 OFF
D1 OFF, D2 ON, D3 OFF
D1 ON, D2 OFF, D3 ON
D1 OFF, D2 ON, D3 ON

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MGVCL Exam Paper (30-07-2021 Shift 1)
The expression for voltage regulation of a short transmission line for lagging power factor is given by: ___, where, 'I' is the line current, 'V_r' is the receiving end voltage, 'R' is the line resistance and 'X' is the line reactance.

(IR cosφ_r + IX sinφ_r)/V_r
(IX cosφ_r - IR sinφ_r)/V_r
(IX cosφ_r + IR sinφ_r)/V_r
(IR cosφ_r - IX sinφ_r)/V_r

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MGVCL Exam Paper (30-07-2021 Shift 1)
નીચેના રુઢિપ્રયોગોને અર્થ સાથે સાંકળી જોડી બનાવો.
1. કાન કરડવા - 1. બાતમી મળી જવી.
2. કાન ફૂંકવા - 2. વાત પર ધ્યાન ન આપવું.
૩. કાને વાત પહોચવી - ૩. કાન

1-32-43-14-2
1-22-33-44-1
1-32-23-44-1
1-42-33-14-2

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MGVCL Exam Paper (30-07-2021 Shift 1)
Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer?

star-star
delta-delta
delta-star
star-delta

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