Related Questions

Inductance is indirectly proportional to the square of the number of turns, the permeability, and the cross-sectional area of the core.
A True
B False
XL is directly proportional to frequency and inductance.
A True
B False
একটি কণা t = 0 সময়ে স্থির অবস্থা থেকে যাত্রা শুরু করে। কণাটির ওপর প্রযুক্ত লব্ধি বল, সময় t এর সমানুপাতিক। কণাটির গতিশক্তি নিচের কোনটির সমানুপাতিক হবে? (A particle starts from rest at t = 0. The net force acting on the particle is proportional to time t. Its kinetic energy is proportional to which one of the following?)
A t2
B t3
C t
D t4
The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances. This is the
A Lewis-Randall rule
B Statement of Vant-Hoff equation
C Le-Chatelier's principle
D None of these
If A varies directly proportional to C and B also varies directly proportional to C, which one of the following is not correct ?
A $$\left( {A + B} \right)\alpha \,C$$
B $$\left( {A - B} \right)\alpha \,\frac{1}{C}$$
C $$\sqrt {AB} \,\alpha \,C$$
D $$\frac{A}{B} = {\text{constant}}$$
Inductance affects the direct current flow
A Only at the time of turning off
B Only at the time of turning on
C At the time of turning on and off
D At all the time of operation
The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns.
A Yes
B No
Inductance is the property of an inductor that produces an opposition to any change in current.
A True
B False
The total current divides among parallel resistors in a manner directly proportional to the resistance values.
A True
B False
The current drawn by the armature of D.C. motor is directly proportional to
A The torque required
B The speed of the motor
C The voltage across the terminals
D None of the above

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