robustlifestyles.com – MCQs, Mock Tests | Analytical instruments Analytical Instrumentation MCQ Question Set 25

Pressure can be directly measured from load cell.

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

✅ Correct Answer: 2

Which of the following can be measured using a load cell?

1. Displacement
2. Stress
3. Strain
4. All of the mentioned

✅ Correct Answer: 4

Which of the following represent the temperature at which atmosphere moisture can saturate?

1. Bubble point
2. Dew point
3. Melting point
4. Saturation point

✅ Correct Answer: 2

CRO can be considered as an inverse transducer.

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

✅ Correct Answer: 2

Closed-loop system are also known as manual control system.

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

✅ Correct Answer: 2

Which of the following lead to instability?

1. Negative feedback
2. Positive feedback
3. Both positive and negative feedback
4. None of the mentioned

✅ Correct Answer: 2

Which of the following is the application of a positive feedback system?

1. Telemetry system
2. Automatic test system
3. Bimorph position control system
4. None of the mentioned

✅ Correct Answer: 4

Which of the following is the application of a negative feedback system?

1. Mercury thermostat
2. Centrifugal governor
3. Audio amplifier
4. All of the mentioned

✅ Correct Answer: 4

For a good control system bandwidth should be ______

1. Very low
2. Ideally zero
3. Very high
4. None of the mentioned

✅ Correct Answer: 3

Time taken by a system to achieve stable state is _________

1. Oscillation
2. Damping
3. Speed
4. Bandwidth

✅ Correct Answer: 3

Electric hand drier is an example of ______

1. Open loop control system
2. Closed loop control system
3. Unpredictable
4. None of the mentioned

✅ Correct Answer: 1

Automatic washing machine is ______

1. Open loop control system
2. Closed loop control system
3. Unpredictable
4. None of the mentioned

✅ Correct Answer: 1

Which of the following can be a source of supply in dc power supplies?

1. Battery
2. Dry cell
3. Full wave rectifier
4. All of the mentioned

✅ Correct Answer: 4

Which of the applicationâ€™s filters used for?

1. Reducing ripples
2. Increasing ripples
3. Increasing phase change
4. Increasing amplitude

✅ Correct Answer: 1

Which of the following represent a change of output voltage when load current is increased?

1. Line regulation
2. Load regulation
3. Current regulation
4. Voltage regulation

✅ Correct Answer: 2

Which of the following generate output voltage much closer to true value?

1. True generator
2. Precision generator
3. Output generator
4. Accurate generator

✅ Correct Answer: 2

Why zener diodes are provided in dc supply?

1. For forward conduction
2. For reverse conduction
3. For reference voltage
4. For increasing amplitude

✅ Correct Answer: 3

Stability of output voltage is entirely depended on _________

1. Stability of transformer
2. Stability of zener diode
3. Quality of wires
4. Capacitor values

✅ Correct Answer: 2

For excellent stability, the zener diode is kept in temperature controlled casket.

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

✅ Correct Answer: 2

For instrumentation system, precision variable voltage-reference system is necessary.

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

✅ Correct Answer: 1

Which of the following can be used as a comparator?

1. Zener diode
2. Diode
3. Operational amplifier
4. All of the mentioned

✅ Correct Answer: 3

Which of the following are not the standard value of Zener diodes?

1. 5.1 V
2. 5.6 V
3. 5.8V
4. 6.2V

✅ Correct Answer: 3

Which of the following signals are generated by Wien-bridge oscillators?

1. Square wave
2. Sine wave
3. Triangular wave
4. Pulse wave

✅ Correct Answer: 2

In a Wien-bridge oscillator for obtaining 160Hz frequency output what will be the capacitor value if resistance is selected as 1Kâ„¦?

1. 10 ÂµF
2. 1 ÂµF
3. 1 nF
4. 10 nF

✅ Correct Answer: 2

In a Wien-bridge oscillator, frequency of oscillation and capacitor value have ______

1. Direct proportionality
2. Inverse proportionality
3. Equality
4. No relation

✅ Correct Answer: 2

Which of the following device is a non-linear device?

1. Resistance
2. Diode
3. Op-amp
4. Capacitor

✅ Correct Answer: 2

In RC phase shift oscillator, one R-C bridge provides ___________ phase shift.

1. 300
2. 600
3. 900
4. 1800

✅ Correct Answer: 2

Which of the following oscillators have higher stability at a higher frequency?

1. Wien-bridge oscillator
2. RC phase shift oscillator
3. Crystal oscillator
4. All of the mentioned

✅ Correct Answer: 3

Which of the following can be considered as oscillation frequency controlling element in RC phase shift oscillator?

1. Resistance
2. Capacitor
3. Both resistor and capacitor
4. None of the mentioned

✅ Correct Answer: 3

Which of the following represents the LC tuned circuit?

1. Wien bridge oscillator
2. T oscillator
3. Hartley oscillator
4. All of the mentioned

✅ Correct Answer: 3

Which of the following can be used to produce a square waveform?

1. Wien bridge oscillators
2. T-oscillator
3. Hartley oscillator
4. Multivibrators

✅ Correct Answer: 4

Pulse wave and square wave are the same in all aspect.

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

✅ Correct Answer: 2

Which of the following represents the radio frequency range?

1. Less than 100 Hz
2. Less than 100 KHz
3. Less than 100MHz
4. Between 100MHz to 2000 MHz

✅ Correct Answer: 4

Which of the following represents RF?

1. Relative frequency
2. Radio frequency
3. Recursive frequency
4. Reduced frequency

✅ Correct Answer: 2

High frequency amplifier in FM telemetry have _____

1. Zero frequency
2. Infinite frequency
3. Variable frequency
4. Fixed frequency

✅ Correct Answer: 4

Cathode ray oscilloscope uses ________

1. Wide band amplifier
2. Narrow band amplifier
3. Zero band amplifier
4. None of the mentioned

✅ Correct Answer: 1

Ideal op-amp have _______________ input impedance.

1. Zero
2. Low
3. High
4. Infinite

✅ Correct Answer: 4

Gain of wide band amplifiers are ________

1. Very low
2. Less than 100
3. 100 to 300
4. 300 to 600

✅ Correct Answer: 3

Ideal op-amp have equal input impedance and output impedance values.

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

✅ Correct Answer: 2

Wide band amplifiers are most commonly ______

1. Single ended
2. Double ended
3. Unpredictable
4. None of the mentioned

✅ Correct Answer: 1

Which of the following can be used as an amplifier?

1. IC 8870
2. IC 741
3. IC 4047
4. IC 4041

✅ Correct Answer: 2

Which of the following op-amp configurations are not possible?

1. Differential amplifier
2. Inverting amplifier
3. Non-inverting amplifier
4. All of the mentioned

✅ Correct Answer: 4

Which of the following device is similar to analog comparator?

1. Analog switch
2. MCB
3. Energy meter
4. Digital switch

✅ Correct Answer: 1

Which of the following can act as a comparator?

1. Op-amp with negative feedback
2. Op-amp with positive feedback
3. Op-amp without feedback
4. None of the mentioned

✅ Correct Answer: 3

Zero crossing detector has ____________ as reference voltage.

1. +ve Vcc
2. â€“ve Vcc
3. Zero V
4. 5V

✅ Correct Answer: 3

Which of the following detect the presence of a voltage between two voltages?

1. Zero crossing detector
2. Differential comparator
3. Window comparator
4. None of the mentioned

✅ Correct Answer: 3

Which of the following are used in window comparators?

1. Op-amps and AND gates
2. OP-amps and OR gates
3. Op-amps and XOR gates
4. OP-amps and NAND gates

✅ Correct Answer: 1

Schmitt trigger is a sine wave generator.

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

✅ Correct Answer: 2

Difference between levels on input that causes transition in Schmitt trigger is ____

1. Hysteresis
2. Threshold
3. Cut-off value
4. Peak value

✅ Correct Answer: 1

Threshold voltage for switching in Schmitt trigger is determined by _______

1. Resistor R1
2. Resistor R2
3. Both resistors
4. None of the mentioned

✅ Correct Answer: 3

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Analytical Instrumentation MCQ Question Set 25