Question

In high a.c voltage measurements, capacitance voltage divider is commonly used instead of a resistor. Justify your answer

Answer #1

(a) The bulb is in series with an inductor along with
an a.c. source, lighting with certain intensity. How does the
intensity of the bulb changes (i) on decreasing inductance (ii) on
decreasing the frequency. Give reasons in support of your answer.
(2marks)
(b) A 10Ω resistor is in series with a 20mH inductor
with a 12 V a.c. supply.What is the supply frequency, when the
current flowing in the circuit is 3mA?
(2marks)
(c) Draw graphs between the following...

Learning Goal:
To understand how to calculate capacitance, voltage, and charge
for a combination of capacitors connected in series.
Consider the combination of capacitors shown in the
figure.(Figure 1)
Three capacitors are connected to each other in series, and then to
the battery. The values of the capacitances are C,
2C, and 3C, and the applied voltage is
?V. Initially, all of the capacitors are completely
discharged; after the battery is connected, the charge on plate 1
is Q
Part...

An LR circuit can be used as a "phase shifter." Assume that an
"input" source voltage V=V0sin(2πft+ϕ) is connected across a series
combination of an inductor L = 54 mH and resistor R. The "output"
of this circuit is taken across the resistor.
If V_0 = 27 V and f = 105 Hz , determine the value of R so that
the output voltage VR lags the input voltage V by 30 ∘.
Express your answer using two significant figures....

For each of the following scenarios, state whether the normal
distribution may be used and justify your answer. If the normal
distribution can't be used, state which distribution should be used
instead.
a. A random sample of size 15 is taken from a normal population
with standard deviation 5. Find the probability that the sample
mean is greater than 28.
b. A random sample of size 15 is taken from a normal population
with standard deviation 5. Find the probability...

A common use of capacitors as a reactive component is in a
low-pass or high-pass filter, both of which contain a resistor and
a capacitor. A low-pass filter is one that passes through signals
with frequencies lower than a particular cutoff frequency and
causes attenuation in signals of higher frequency. A high-pass
filter is one that passes through signals with frequencies higher
than a certain cutoff and causes lower frequencies to attenuate,
giving the two configurations their names. The cutoff...

2(a). A transformer has a primary-to-secondary turns ratio of
100:1. The voltage on the primary side is 27.7 kv.a.c. at 60.0 Hz (
assume 60.0 Hz when treating electric power topics). A load is
connected across the secondary winding. Assuming that the
transformer is ideal, what voltage is developed to the load?
Briefly show your work. Sketch a diagram.
2(b). The load of part a is a 2.00-ohm load. How much current
does the load draw from the transformer’s secondary...

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