Instrumentation Engineering
2020 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE IN 2020 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 52–54 of 65. Imported answers require review unless explicitly marked reviewed.
Question 42
Open questionINNAT2 marksNeeds review
The real power drawn by a balanced load connected to a 400 V, 50 Hz, balanced, symmetrical 3-phase, 3-wire, RYB sequence mains is measured using the two-wattmeter method. Wattmeter W1 is connected in the R line and wattmeter W2 is connected in the B line. The line current is measured as
A. If the wattmeter W1 reads zero, the reading on W2 (in watts) is ____Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 43
Open questionINNAT2 marksNeeds review
A 6½ digit timer-counter is set in the ‘time period’ mode of operation and the range is set as ‘ns’. For an input signal, the timer-counter displays 100000. With the same input signal, the timer-counter is changed to ‘frequency’ mode of operation and the range is set as ‘Hz’. The display will show the number ____
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 44
Open questionINNAT2 marksNeeds review
The circuit shown uses ideal opamp powered from a supply
V. If the charge
generated by the piezoelectric sensor is of the form
μC, the peak detector output after 10 cycles of
(in volts, rounded off to one decimal place) is ____
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer