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Year 2024
April
Week # 1
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FAQs
April
Week # 1 Quiz 2
Q1.
The average value of half wave rectified voltage with a peak value of 200 V is________.
63.7 V
127.3 V
141 V
200 V
Q2.
A coil of inductance \(L\) henry is connected in parallel with an \(R\:\Omega\) resistor. The current flowing through resistance and inductance is \(I_R\) and \(I_L\) respectively. What is the value of the current drawn from the supply?
\(I_R^2+I_L^2\)
\(\sqrt{I_R^2+I_L^2}\)
\(I_R^2-I_L^2\)
\(\sqrt{I_R^2-I_L^2}\)
Q3.
An alternating voltage \(V=200 \sin 100t\). Find the amplitude and frequency.
\(V_{avg}=127.4\: V,\:f=15.9\:Hz\)
\(V_{avg}=123\: V,\:f=25.6\:Hz\)
\(V_{avg}=124\: V,\:f=30\:Hz\)
\(V_{avg}=130\: V,\:f=30\:Hz\)
Q4.
When four capacitors of capacitance \(\frac{1}{4}\: \mu F\) are connected in series, the resultant capacitance will be
\(1\: \mu F\)
\(\frac{1}{8}\: \mu F\)
\(\frac{1}{16}\: \mu F\)
\(4\: \mu F\)
Q5.
An emf of 16 volts is induced in a coil of inductance 4H. The rate of change of current in the coil must be
64 A/s
32 A/s
16 A/s
4 A/s
Q6.
An AC voltage is given by the following equation:
\(V(t) = 4 \sin3t+ 8\sin 6t\). Calculate its RMS value.
\(\sqrt{40}\)
\(\sqrt{50.91}\)
\(\sqrt{20}\)
\(\sqrt{25.47}\)
Q7.
An active network is supplying a load. Rth and Vth at the terminals to which the load is connected is 15 Ω and 90 V respectively. Then maximum power supplied to the load is
150 W
1350 W
1500 W
135 W
Q8.
The power consumed in a circuit element will be max when the phase difference between the current and voltage is
\(180^\circ\)
\(90^\circ\)
\(60^\circ\)
\(0^\circ\)
Q9.
Ohm is the unit of all of the following except ?
capacitance
inductive reactance
capacitive reactance
resistance
Q10.
\(Q\) factor of an RLC series resonance circuit is:
\(\sqrt {\frac{2R}{LC}}\)
\(\frac{1}{R}\sqrt {\frac{L}{C}}\)
\(\sqrt {\frac{R}{LC}}\)
\(\frac{1}{R}\sqrt {\frac{1}{LC}}\)
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