Doubling the operating frequency of an inductive circuit:

Doubling the operating frequency of a purely inductive circuit:

A

doubles the amount of current through the inductors

B

has no effect on the current through the inductors

C

cuts the current through the inductors one-half

D

increases the current, but by an amount that can be determined only by doing a complete analysis of the circuit

E

None of the above

Doubling the operating frequency of a purely capacitive circuit:

A

has no effect on the total circuit current

B

doubles the amount of total current

C

cuts the total current by one-half

D

thrice the amount of total current

E

None of the above

Doubling the operating frequency of a capacitive circuit:

A

doubles the amount of a capacitive reactance

B

has no effect on the capacitive reactance

C

cuts the capacitive reactance in half

D

multiplies the capacitive reactance by 6.28

E

None of the above

Doubling the operating voltage of a purely capacitive circuit:

A

has no effect on the capacitive reactance

B

doubles the amount of capacitive reactance

C

multiplies the capacitive reactance by 7

D

cuts the capacitive reactance in half

E

None of the above

An inductor and a resistor are in series with a sine wave voltage source. The frequency is set so that the inductive reactance is equal to the resistance. If the frequency is increased, then

A

VR = VL

B

VL

C

VL = VR

D

VL > VR

If doubling a number and adding 20 to the result gives the same answer as multiplying the number by 8 and taking away 4 from the product, the number is :

A

2

B

3

C

4

D

6

A solution that contains 20% sugar by weight is made sweeter by doubling the amount of sugar.The percent of sugar, by weight, in the new solution is --

A

50%

B

40%

C

33.33%

D

30%

Doubling the diameter of the coil in an inductor:

A

multiplies the value of inductance by two

B

reduces the value of inductance by one-half

C

reduces the value of inductance by one-fourth

D

multiplies the value of inductance by four

E

None of the above

Doubling the number of turns of wire in an inductor:

A

reduces the value of inductance by one-half

B

multiplies the value of inductance by two

C

multiplies the value of inductance by four

D

reduces the value of inductance by one-fourth

E

None of the above

Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.

A

No change

B

Doubling

C

$${\frac{{\text{L}}}{4}^{{\text{th}}}}$$ reduction

D

Four fold increase

Doubling the operating frequency of an inductive circuit:

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