Related Questions

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

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