GATE IN topic:process-control PYQs & Answers — Page 35

Questions 341–350 of 650. Imported answers require independent review unless marked reviewed.

Let

denote the unit step function. The bilateral Laplace transform of the function

is _____.

Your answerChoose one option.

with real part of

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Input-output characteristic of a temperature sensor is exponential for a

Your answerChoose one option.

Thermistor

Thermocouple

Resistive Temperature Device (RTD)

Mercury thermometer

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The signal

Your answerChoose one option.

periodic with period

not periodic

periodic with period

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The step response of a circuit is seen to have an oscillatory behaviour at the output with oscillations dying down after some time. The correct inference(s) regarding the transfer function from input to output is/are

Your answerSelect all correct options. You can choose more than one.

that it is of at least second order.

that it has at least one pole-pair that is underdamped.

that it does not have a real pole.

that it is a first order system.

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For a 4-bit Flash type Analog to Digital Convertor (ADC) with full scale input voltage range “V”, which of the following statement(s) is/are true?

Your answerSelect all correct options. You can choose more than one.

The ADC requires 15 comparators.

The ADC requires one 4 to 2 priority encoder and 4 comparators.

A change in the input voltage by

will always flip MSB of the output.

A change in the input voltage by

will always flip the LSB of the output.

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A 16-bit microprocessor has twenty address lines (

) and 16 data lines. The higher eight significant lines of the data bus of the processor are tied to the 8-data lines of a 16 Kbyte memory that can store one byte in each of its 16K address locations. The memory chip should map onto contiguous memory locations and occupy only 16 Kbyte of memory space. Which of the following statement(s) is/are correct with respect to the above design:

Your answerSelect all correct options. You can choose more than one.

If the 16 Kbyte of memory chip is mapped with a starting address of 8000H, then the ending address will be 83FFF.

The active high chip-select needed to map the 16 Kbyte memory with a starting address at F000H is given by the logic expression

The 16 Kbyte memory cannot be mapped with contiguous address locations with a starting address as 0F000H using only

for generating chip select.

The above chip cannot be interfaced as the width of the data bus of the processor and the memory chip differs.

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A single-phase transformer has a magnetizing inductance of 250 mH and a core loss resistance of 300

, referred to primary side. When excited with a 230 V, 50 Hz sinusoidal supply at the primary, the power factor of the input current drawn, with secondary on open circuit, is ____ (rounded off to two decimal places).

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Taking

as positive for clockwise encirclement, otherwise negative, the number of encirclements

in the Nyquist plot of

is _____.

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The diode used in the circuit has a fixed voltage drop of 0.6 V when forward biased. A signal

is given to the ideal OpAmp as shown. When

is at its positive peak, the output (

) of the OpAmp in volts is _____.

Diagram for Instrumentation Engineering question 14

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The transistor Q₁ has a current gain

and the transistor Q₂ has a current gain

. The current

in microampere is ______.

Diagram for Instrumentation Engineering question 15

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GATE IN topic:process-control PYQs

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