1.

γ is given as 1.585. Resistance at maximum allowable current is given equal to 4 Ω, what is the 5^th step resistance?(a) 0.235(b) 0.370(c) 1.476(d) 2I got this question at a job interview.I'm obligated to ask this question of Starting of DC Motors topic in chapter DC Motors of DC Machines

Answer»

Right option is (a) 0.235

Easiest explanation: γ is GIVEN as 1.585. So γ^-1 is equal to 0.631. R^1 is provided and it is equal to 4 Ω.

r^1= (1-0.631) * 4 = 1.476 Ω

 r^2= 1.476*0.631= 0.931 Ω, SIMILARLY CALCULATING till r^5= 0.235 Ω.



Discussion

No Comment Found

Related InterviewSolutions