GAIL Previous Papers For Electrical

I am preparing for GAIL recruitment for Electrical so can you provide me previous papers for preparation and also provide me contact details GAIL.

[Saksham]

Here I am uploading a file, from where you can download the GAIL Previous year question Papers For Electrical branch:

1. A 3 stack stepper motor with 12 numbers of rotor teeth has a step angle of

____________.

120
8°
24°
10°

AnsExplanation: Given m = 3, Nr = 12

Step angle = 360 / m x Nr = 360 /3 x 12 = 10°

2.Oil-filled cable has a working stress of __________ kV/mm

10
12
13
15
Ans

Explanation: This is defined by dielectric strength of mineral oil i.e. 15 kV/mm.

3. The rotor frequency for a 3 phase 1000 RPM 6 pole induction motor with a slip of 0.04 is________Hz

8
4
6
2
Ans

Explanation: Given: N=1000 rpm ; P= 6; s= 0.04;

and f = N_P/ 120

= 1000_6/120

= 50 Hz

Rotor frequency fr=s_f = 0.04_50

= 2.0 Hz

(GAIL Electrical Paper)