$A$ student connects a long air-cored coil of manganin wire to a $100\, V$ $D.C.$ supply and records a current of $25\, A$. When the same coil is connected across a $100\, V$,$50\, Hz$ $A.C.$ supply,the current reduces to $20\, A$. The reactance of the coil is ...... $\Omega$.
- A$4$
- B$3$
- C$5$
- DNone
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Match the columns.
Column $-I$ Column $-II$ $(a)$ Parturition $(p)$ Attachment of embryo to endometrium $(b)$ Gestation $(q)$ Release of egg from Graafian follicle $(c)$ Ovulation $(r)$ Delivery of Foetus from uterus $(d)$ Implantation $(s)$ Duration between pregnancy and birth $(t)$ Formation of zygote by fusion of egg and sperm
| Column $-I$ | Column $-II$ |
| $(a)$ Parturition | $(p)$ Attachment of embryo to endometrium |
| $(b)$ Gestation | $(q)$ Release of egg from Graafian follicle |
| $(c)$ Ovulation | $(r)$ Delivery of Foetus from uterus |
| $(d)$ Implantation | $(s)$ Duration between pregnancy and birth |
| $(t)$ Formation of zygote by fusion of egg and sperm |
The area (in sq. units) of the triangle formed by the straight line $x+y=3$ and the angular bisectors of the pair of straight lines $x^2-y^2+2y=1$ is:
$A$ $100\%$ efficient transformer has $100$ turns in the primary and $25$ turns in its secondary coil. If the current in the secondary coil is $4\, A$,then the current in the primary coil is.....$A$.
The slope of the tangent to the curve $x=t^{2}+3t-8, y=2t^{2}-2t-5$ at the point $(2,-1)$ is
Enzymatic activity is inhibited by which of the following?
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