Electrical Engineering
2018 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE EE 2018 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.
Question 48
Open questionEENAT2 marksNeeds review
The voltage across the circuit in the figure, and the current through it, are given by the following expressions:
where
radians. If the average power delivered to the circuit is zero, then the value of
(in Ampere) is ____ (up to 2 decimal places). 
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 49
Open questionEENAT2 marksNeeds review
A phase controlled single phase rectifier, supplied by an AC source, feeds power to an R-L-E load as shown in the figure. The rectifier output voltage has an average value given by
, where
volts and
is the firing angle. If the power delivered to the lossless battery is 1600 W,
in degree is_______ (up to 2 decimal places). 
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 50
Open questionEENAT2 marksNeeds review
The figure shows two buck converters connected in parallel. The common input dc voltage for the converters has a value of 100 V. The converters have inductors of identical value. The load resistance is 1
. The capacitor voltage has negligible ripple. Both converters operate in the continuous conduction mode. The switching frequency is 1 kHz, and the switch control signals are as shown. The circuit operates in the steady state. Assuming that the converters share the load equally, the average value of
, the current of switch S1 (in Ampere), is ____ (up to 2 decimal places). 
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