ESE EC 2018 Achiever Study Plan: Basic Electrical Quiz 1

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Question 1

The values of capacitance and inductance used in the series LCR circuit are 160 pF and with the inherent tolerance – 10% in each. Then, the resonance frequency of the circuit is in the range of

• A0.8 MHz to 1.2 MHz
• B0.9 MHz to 1.1 MHz
• C0.8 MHz to 1.0 MHz
• D0.9 MHz to 1.2 MHz

Question 2

For any lumped network, for any cut sets and at any instant of time the algebraic sum of all branch currents traversing the cut-set branches is always:

• AOne
• BZero
• CInfinity
• DGreater than zero, but less than one

Question 3

According to network graphs, the network with:
1) Only two odd vertices is traversable
2) No odd vertices is traversable
3) Two or more than two odd vertices are traversable
Which of the above statements is/are correct?

• A1 only
• B2 only
• C3 only
• D1 and 2

Question 4

If the Q-factor of a coil at resonant frequency of 1.5 MHz is 150 for a series resonant circuit, then the corresponding bandwidth is

• A225 MHz
• B1.06 MHz
• C50 kHz
• D10 kHz

Question 5

It' P is the true power, P_r is the reactive power and P_a is the apparent power then the Power factor is given by

• AP/P_a
• BP_a/P
• CP_r/P
• DP/P_r

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