Instrumentation Engineering
2019 · Paper 1
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Complete GATE IN 2019 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 21
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The total number of Boolean functions with distinct truth-tables that can be defined over 3 Boolean variables is ______.
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The figure below shows the
full-adder block of a binary adder circuit. Cᵢ is the input carry and Cᵢ₊₁ is the output carry of the circuit. Assume that each logic gate has a delay of 2 nanosecond, with no additional time delay due to the interconnecting wires. If the inputs Aᵢ, Bᵢ are available and stable throughout the carry propagation, the maximum time taken for an input Cᵢ to produce a steady-state output Cᵢ₊₁ is ______ nanosecond. 
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The resistance of a resistor is measured using a voltmeter and an ammeter. The voltage measurements have a mean value of 1 V and standard deviation of 0.2 V while current measurements have a mean value of 1 mA with standard deviation of 0.05 mA. Assuming that the errors in voltage and current measurements are independent, the standard deviation of the calculated resistance value is ______
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