Electrical Engineering - Transformers - Discussion
Discussion Forum : Transformers - General Questions (Q.No. 7)
7.
To step 110 V ac down to 20 V ac, the turns ratio must be
Answer: Option
Explanation:
Vp/Vs = Np/Ns
Vs = (Ns/Np)Vp
We required turns ratio i.e., (Ns/Np)
= Vs/Vp
= 20/110
= 0.181818182
[Note: p - primary; s - secondary]
For step down transfer, the turns ratio will be less than 1.
For simulation: Step-Down Transformer Circuit Simulator.
Discussion:
29 comments Page 3 of 3.
Lavkesh said:
10 years ago
n2/n1 = v2/v1 and i1/i2.
But here we required only n2/n1 = 20/110 = 0.18.
But here we required only n2/n1 = 20/110 = 0.18.
Rajashekhar said:
1 decade ago
When I solved this problem am getting as 5.5 value. Kindly confirm me.
Tanusri said:
1 decade ago
Can anyone tell me definition of turns ratio? is it N2/N1 or N1/N2 ?
Darshan said:
1 decade ago
N2/N1 is correct N2=secondary turns, N1= primary turns.
Chaitanya said:
8 years ago
What is turns ratio formula? Please, can you help me?
Pppp said:
10 years ago
Turns ratio formula is n2/ne and the answer is 5.5.
(1)
Bharath reddy said:
1 decade ago
I'm confused 0.18, 5.5 I think correct answer 0.18.
Pintu kumar said:
9 years ago
I am confused please give me the correct answer.
Amit said:
1 decade ago
N2/N1=V2/V1.
N2/N1= 20/110.
0.18 Answer C.
N2/N1= 20/110.
0.18 Answer C.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers