R4RIN – MCQs, Mock Tests | Analytical instruments Analytical Instrumentation MCQ Question Set 15

The 100 kHz oscillator acts as which of the following?

1. Transmitter
2. Receiver
3. Modulator
4. Transmitter and receiver

✅ Correct Answer: 4

Which of the following removes residual harmonics from the phase-detected signal?

1. High-pass filter
2. Low-pass filter
3. Band-pass filter
4. Chopper

✅ Correct Answer: 2

The oscilloscope is used to display the klystron mode.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

In the sample cell, which of the following is selected to give maximum optical transmission in the UV-visible region?

1. Tungsten
2. Quartz
3. Phosphor
4. Potassium

✅ Correct Answer: 2

In analytical instrumentation, little circuitry is concerned with the amplification and processing of signals.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

Which of the following samples the analog signals to obtain their digital equivalent?

1. Analog to digital converter
2. Electronic counter
3. Comparator
4. Digital to analog converter

✅ Correct Answer: 2

Which of the following can be used to store information?

1. Gates
2. ADC
3. DAC
4. Flip-flops

✅ Correct Answer: 4

Which of the following is known as a nibble?

1. 1 bit
2. 4 bits
3. 8 bits
4. 16 bits

✅ Correct Answer: 2

Which of the following is the binary equivalent of the decimal number 10?

1. 1100
2. 1010
3. 1010
4. 1110

✅ Correct Answer: 2

1001 is a data presented on a set of binary coded decimal output lines. What would be the decimal equivalent of this number in the case of negative logic?

1. 9
2. 6
3. 1
4. 8

✅ Correct Answer: 2

Two switches are in parallel and are connected with a lamp and supply in series. This represents which of the following logic gate?

1. AND gate
2. OR gate
3. EX-OR gate
4. EX-OR gate

✅ Correct Answer: 2

The output will be logic ‘1’ only if all the inputs are ‘0’. Which gate must be used to execute this condition?

1. AND gate
2. NAND gate
3. NOR gate
4. EX-OR gate

✅ Correct Answer: 2

INHIBIT gate is ________ gate with an inhibiting input.

1. AND gate
2. OR gate
3. EX-OR gate
4. NOT gate

✅ Correct Answer: 2

Which of the following is the most widely employed logic family?

1. Emitter-coupled logic
2. Transistor-transistor logic
3. CMOS logic family
4. NMOS logic

✅ Correct Answer: 2

The basic function of TTL gate is which of the following functions?

1. AND
2. OR
3. NOR
4. NAND

✅ Correct Answer: 4

In TTL logic, the input transistor has a number of ________ equal to the desired fan-in of the circuit.

1. Base
2. Collect
3. Emitter
4. Gate

✅ Correct Answer: 3

Which of the following is the propagation delay of TTL circuits?

1. 1 s
2. 1 ms
3. 1 ns
4. 1 ps

✅ Correct Answer: 3

The standard TTL gates are marketed as _______ series.

1. 80
2. 82
3. 74
4. 08

✅ Correct Answer: 3

Schottky TTL logic family does not have which of the following features?

1. Good fan-in
2. Good fan-out
3. High speed capability
4. High propagation delay

✅ Correct Answer: 4

The logic ‘0’ of ECL is represented as ______V and logic ‘1’ is represented as ______V.

1. 1, 1.65
2. 0.9, 1.75
3. 1.2, 2.35
4. 1.9, 4.3

✅ Correct Answer: 2

ECL is a way of achieving a higher speed of gate.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Which of the following is not the advantage of MOS gates?

1. Low power dissipation
2. Small size
3. Good immunity to noise
4. High switching speeds

✅ Correct Answer: 4

CMOS gates are commercially available as which of the following series?

1. 1000
2. 2000
3. 3000
4. 4000

✅ Correct Answer: 4

The switching of MOS gates can be improved by using CMOS.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 1

Science of precise and accurate measurement of various physical quantities is termed as ______

1. Metrology
2. Meteorology
3. Pedology
4. Mineralogy

✅ Correct Answer: 1

In a measuring system quantity under measurement is termed as ______

1. Measurand
2. Controllers
3. Sensors
4. Indicators

✅ Correct Answer: 1

In a measurement, what is the term used to specify the closeness of two or more measurements?

1. Precision
2. Accuracy
3. Fidelity
4. Threshold

✅ Correct Answer: 1

Accuracy and Precision are dependent on each other.

1. True
2. False
3. all of the above
4. None of the mentioned

✅ Correct Answer: 2

During a measurement, for a measure value “B”, absolute error is obtained as “A”, what will be the relative error of measurement?

1. A/B
2. B/A
3. (A+1)/B
4. (B+A)/A

✅ Correct Answer: 1

In a measuring system what is the term used to specify a difference between higher and lower calibration values?

1. Range
2. Span
3. Drift
4. Threshold

✅ Correct Answer: 2

Using a voltmeter measured value is 24.3V, while its true value is 24V. What is the relative error of measurement?

1. 1.25%
2. 1.2%
3. 1.3%
4. 1.4%

✅ Correct Answer: 1

_______ is used to prevent oscillation in moving system.

1. Oscillatory system
2. Controlling
3. Damping system
4. Deflecting

✅ Correct Answer: 3

What is the span of an ammeter with range -30 to +30A?

1. 60
2. -60
3. 30
4. 20

✅ Correct Answer: 1

Given a DC voltmeter has a sensitivity of 500ohm/V. For a full scale reading in 100V range, what will be the current through voltmeter?

1. 500mA
2. 200mA
3. 250mA
4. 300mA

✅ Correct Answer: 2

What will be the sensitivity of a voltmeter for 0 to 50mA meter movement?

1. 20ohm/V
2. 25ohm/V
3. 50ohm/V
4. 5ohm/V

✅ Correct Answer: 1

Using an instrument for measuring capacitance gives an output 203.5nF whereas true value is 203.9nF. What will be the static correction of the instrument?

1. -0.4nF
2. 0.4nF
3. 1nF
4. 0.5nF

✅ Correct Answer: 2

What is the relation between scale factor and sensitivity of a transducer?

1. Scale factor is double of sensitivity
2. Scale factor is inverse of sensitivity
3. Sensitivity is inverse of scale factor
4. Sensitivity is equal to scale factor

✅ Correct Answer: 2

Which of the following is an analog transducer?

1. Encoders
2. Strain gauge
3. Digital tachometers
4. Digital tachometers

✅ Correct Answer: 2

What is the principle of operation of LVDT?

1. Mutual inductance
2. Self-inductance
3. Permanence
4. Reluctance

✅ Correct Answer: 1

Which of the following can be measured using Piezo-electric transducer?

1. Velocity
2. Displacement
3. Force
4. Sound

✅ Correct Answer: 3

Capacitive transducer is used for?

1. Static measurement
2. Dynamic measurement
3. Transient measurement
4. Both static and dynamic

✅ Correct Answer: 2

Which of the following is used in photo conductive cell?

1. Selenium
2. Quartz
3. Rochelle salt
4. Lithium sulphate

✅ Correct Answer: 1

Closeness of measured value to true value is ________

1. Accuracy
2. Precision
3. Correction
4. Uncertainty

✅ Correct Answer: 1

________ of a measuring system refers to its ability to follow instant by instant the measurand with time.

1. Bandwidth
2. Fidelity
3. Measurement lag
4. Settling time

✅ Correct Answer: 2

For a measuring system, dynamic sensitivity is required to be ________ of static sensitivity.

1. ±2%
2. ±5%
3. ±10%
4. ±20%

✅ Correct Answer: 1

What is the span of an instrument, operating under a bias which read a value from 230V to 450V only?

1. 450
2. 220
3. 230
4. 400 K

✅ Correct Answer: 3

What will be the ratio of amplitudes of largest (maximum) signal to smallest (minimum) signal to which the system is subjected?

1. Time constant
2. Settling period
3. Dynamic range
4. Bandwidth

✅ Correct Answer: 3

For a Measurement, indicated value is 225V while true value if 226V. What will be the static error of an instrument?

1. 1V
2. -1V
3. 0.5V
4. -0.5V

✅ Correct Answer: 2

What is the relation between static error and static correction?

1. Static error is negative of static correction
2. Both are equal
3. No relation
4. Both will be always positive

✅ Correct Answer: 1

What is the term used to express the ability of a measuring system to maintain its standard performance?

1. Zero stability
2. Stability
3. Sensitivity
4. Linearity

✅ Correct Answer: 2