The impedance of an RL circuit varies inversely with frequency.

The impedance of a series RC circuit varies directly with frequency.

A

True

B

False

In an ac circuit, power to the load peaks at the frequency at which the load impedance is the complex conjugate of the output impedance.

A

True

B

False

x varies inversely as square of y. Given that y=2 for x=1. The value of x for y=6 will be equal is-

A

3

B

9

C

1/5

D

1/9

The illumination of a bulb varies inversely as the square of the distance . If the illumination is 6 lux at a distance of 5 meters whet is illumination at a distance of 3 meters?

A

24

B

12

C

6

D

48

The resistance of a conductor varies inversely as

A

Length

B

Area of cross-section

C

Temperature

D

Resistivity

If the time required to complete a definite fraction of reaction varies inversely as the concentration of the reactants, then the order of reaction is

A

0

B

1

C

2

D

3

In continuous filtration (at a constant pressure drop), filtrate flow rate varies inversely as the

A

Square root of the velocity

B

Square of the viscosity

C

Filtration time only

D

Washing time only

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

$$\frac{A}{B} = {\text{constant}}$$

XC is inversely proportional to frequency and capacitance.

A

True

B

False

If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit

A

Doubles

B

Halves

C

Remains constant

D

Cannot be determined without values

The impedance of an RL circuit varies inversely with frequency.

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