Instrumentation Engineering
2018 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE IN 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 16–18 of 65. Imported answers require review unless explicitly marked reviewed.
Question 6
Open questionINMCQ1 markNeeds review
A series R-C circuit is excited by a
V sinusoidal ac voltage source. The locus diagram of the phasor current
A, when C is varied, while keeping R fixed, isYour answerChoose one option.
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Open questionINMCQ1 markNeeds review
Thevenin equivalent circuit representation across terminals p-q of the circuit shown in the figure is a
Your answerChoose one option.
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Open questionINNAT1 markNeeds review
A coil having an impedance of
is connected in parallel to a variable capacitor as shown in figure. Keeping the excitation frequency unchanged, the value of the capacitor is changed so that parallel resonance occurs. The impedance across terminals p-q at resonance (in
) is _____. 
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