The turns ratio ( $r$ ) for a step-up transformer is

r < 1

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r = 1

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r > 1

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=

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Solution

The correct option is A $r < 1$
The set - up transformer is for changing the low voltage A.C. to High Voltage A.C. so the turns in secondary coil are more than in primary coil so the turn ratio of coils = $($ turn in primary / turns in secondary $), r < 1$

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Similar questions

A = [\begin{matrix} 1 & 0 - 1 & 3 \end{matrix}], R_{1} \leftrightarrow R_{2}

A = ⎡ ⎢ ⎣ \begin{matrix} 1 & 2 & 1 - 1 & 0 & 2 2 & 1 & - 3 \end{matrix} ⎤ ⎥ ⎦

A = 1 + r^{a} + r^{2 a} + r^{3 a} + \dots \infty, a > 0

B = 1 + r^{2 b} + r^{4 b} + r^{6 b} + \dots \infty, b > 0,

| r | < 1,

\frac{a}{b}

For the relation $R_{1}$ defined on R by the rule $(a, b) ϵ R_{1} \Leftrightarrow 1 + a b > 0.$

Prove that : $(a, b) ϵ R_{1}$ and $(b, c) ϵ R_{1}$

$\Rightarrow (a, c) ϵ R_{1}$ is not true for all $a, b c ϵ R$

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