1
MHT CET 2021 20th September Morning Shift
+1
-0

When a d.c. voltage of $$200 \mathrm{~V}$$ is applied to a coil of self-inductance $$\left(\frac{2 \sqrt{3}}{\pi}\right) \mathrm{H}$$, a current of $$1 \mathrm{~A}$$ flows through it. But by replacing d.c. source with a.c. source of $$200 \mathrm{~V}$$, the current in the coil is reduced to $$0.5 \mathrm{~A}$$. Then the frequency of a.c. supply is

A
100 Hz
B
60 Hz
C
75 Hz
D
50 Hz
2
MHT CET 2021 20th September Morning Shift
+1
-0

An inductor coil wound uniformly has self inductance 'L' and resistance 'R'. The coil is broken into two identical parts. The two parts are then connected in parallel across a battery of 'E' volt of negligible internal resistance. The current through battery at steady state is

A
$$\mathrm{\frac{2E}{R}}$$
B
$$\mathrm{\frac{3E}{R}}$$
C
$$\mathrm{\frac{4E}{R}}$$
D
$$\mathrm{\frac{E}{R}}$$
3
MHT CET 2021 20th September Morning Shift
+1
-0

An inductor coil takes current 8A when connected to an 100 V and 50 Hz a.c. source. A pure resistor under the same condition takes current of 10A. If inductor coil and resistor are connected in series to an 100V and 40 Hz a.c. supply, then the current in the series combination of above resistor and inductor is

A
$$\frac{10}{\sqrt3}$$A
B
$$\frac{5}{\sqrt2}$$A
C
10$$\sqrt2$$A
D
5$$\sqrt2$$A
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
EXAM MAP
Joint Entrance Examination