1
MHT CET 2021 21th September Evening Shift
+1
-0

Three pure inductors each of inductance 6H are connected as shown in the figure. Their equivalent inductance between the points 'P' and 'Q' is

A
0.5 H
B
18 H
C
6.3 H
D
2 H
2
MHT CET 2021 21th September Evening Shift
+1
-0

The instantaneous value of an alternating current is given by $$\mathrm{i}=50 \sin (100 \pi \mathrm{t})$$. It will achieve a value of $$25 \mathrm{~A}$$ after a time interval of $$\left(\sin 30^{\circ}=0.5\right)$$

A
$$\frac{1}{300} \mathrm{~S}$$
B
$$\frac{1}{100} \mathrm{~S}$$
C
$$\frac{1}{200} \mathrm{~S}$$
D
$$\frac{1}{600} \mathrm{~S}$$
3
MHT CET 2021 21th September Evening Shift
+1
-0

In a step up transformer, which one of the following statements is correct?

A
Number of turns in the secondary coil is less than in primary coil.
B
Voltage in secondary coil is less than voltage is primary coil.
C
Current in the primary coil is more than current in the secondary coil.
D
Current in the primary coil is equal to current in the secondary coil.
4
MHT CET 2021 21th September Morning Shift
+1
-0

In the graphical representation of e.m.f. '$$\mathrm{e}$$' and current '$$\mathrm{i}$$' versus '$$\omega \mathrm{t}$$' for an a.c. circuit, both emf and current reach zero, minimum and maximum value at the same time. The circuit element connected to the source will be

A
pure capacitor
B
combination of capacitor and inductor
C
pure resistor
D
pure inductor
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Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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