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Physics-

General

Easy

Question

The ratio of secondary to the primary turns in a transformer is 3:2. If the power output be $P$ , then the input power neglecting all losses must be equal to

$5 P$
$1.5 P$
$P$
$\frac{2}{5} P$

The correct answer is: $P$

If there are no losses then $p subscript i end subscript equals p subscript 0 end subscript$

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If a current of $3.0 blank a m p e r e s$ flowing in the primary coil is reduced to zero in $0.001 blank s e c o n d$ , then the induced e.m.f. in the secondary coil is $15000 blank v o l t s$ . The mutual inductance between the two coils is

Physics-General

The points on the curve $12 y equals x to the power of 3 end exponent$ whose ordinate and abscissa change at the same rate, are

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The real number $x$ when added to its inverse gives the minimum value of the sum at $x$ equals to

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The angle between the curves $y equals a to the power of x end exponent$ and $y equals b to the power of x end exponent$ is equal to

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If $g open parentheses x close parentheses equals min invisible function application left parenthesis x comma blank x to the power of 2 end exponent right parenthesis$ where $x$ is real number, then

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Physics-General

A coil of $N$ turns and mean cross-sectional area $A$ is rotating with uniform angular velocity $omega$ about an axis at right angle to uniform magnetic field $B$ . The induced e.m.f. $E$ in the coil will be

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