4. Electrical Protection and Safety (Old Question Collection)
23 Feb‐ 2014 ( Morning)
23 Feb‐ 2014 (Evening)
1 Jun‐ 2014 (Morning)
1 Jun‐ 2014 (Evening)
13 Sept‐ 2015 (Morning)
3.
13 Sept‐ 2015 (Morning)
13 Sept‐ 2015 (Evening)
4.
3‐ Dec‐ 2016 (Morning)
9. (i) Negative phase sequence protection shall be installed to protect MOTOR, which
can be damaged due to;‐
(a) Imbalance (unbalance) in supply Voltage
(b) Imbalance (unbalance) in Current in Winding
(c) Huge Current flows in Ground wire
(d) Ungrounded condition
17.
3‐ Dec‐ 2016 (Evening)
25‐ Feb‐ 2018 (Morning)
25‐ Feb‐ 2018 (Morning)
(ii) When determining design current, the correction factor that is applied to a BS 3036,
rewirable fuse is
(a) 0.3
(b) 0.725
(c) 1.725
(d) 2
25‐ Feb‐ 2018 (Morning)