aInfoEra
Home
MCQs
Analytical instruments — Quiz
Analytical Instrumentation MCQ Question Set 17
50 questions · Test your knowledge
Home
/
MCQs
/
Analytical Instrumentation MCQ Question Set 17
1
In 741 IC, pin number 4 is represented by ______
A
Offset null
B
Positive input
C
Negative input
D
Negative supply
2
Which of the following cannot be treated as a requirement of the instrumentation amplifier?
A
Low drift
B
Low input impedance
C
High linearity
D
High CMRR
3
Amplifier with power supply and output circuits galvanically isolated are called ______
A
Differential amplifier
B
Isolation amplifier
C
Inverting amplifier
D
None of the mentioned
4
Voltage follower is also known as ______
A
Unity gain amplifier
B
Differential amplifier
C
Comparator
D
None of the mentioned
5
Which configuration of op-amp is used for filter circuit?
A
Differential
B
Non-inverting
C
Inverting
D
None of the mentioned
6
Amplification of low level signal can be done using_______
A
Electrometer amplifier
B
Difference amplifier
C
Inverting amplifier
D
Non inverting amplifier
7
For an ideal op-amp, zero input results in zero output.
A
True
B
False
C
all of the above
D
None of the mentioned
8
Phase difference between two voltages at frequencies above 10Hz can be measured using _____
A
CRO
B
Voltmeter
C
X-Y plotter
D
Multi meter
9
What is the operating range of X-Y plotter?
A
Below 5Hz
B
Above 10Hz
C
Above 1 KHz
D
Very high frequency
10
What is the expression for phase angle using X-Y plotter? (Assume t0 be time interval between zero crossing of signals and T be time period of signals).
A
(360T0) â„ t0
B
(180 T0) â„ t0
C
(360 t0) â„ T0
D
(180 t0) â„ T0
11
What is the use of flip-flop in electronic phase meters?
A
To provide a delay
B
To provide stability
C
To save data for particular time duration
D
To produce rectangular pulse
12
Phase-Sensitive detectors are used for measuring phase of _______
A
Sinusoidal signals only
B
Non periodic signals only
C
Periodic signals only
D
Both periodic and non-periodic signals
13
Rejection capability of Phase sensitive detector is depended on the averaging time of smoothing filter.
A
True
B
False
C
all of the above
D
None of the mentioned
14
For what purpose, FET’s are included in phase sensitive detectors?
A
As SPDT switches, for working with very high frequency signals
B
As SPDT switches, for working with very low frequency signals
C
As SPST switches, for working with very high frequency signals
D
As SPST switches, for working with very low frequency signals
15
Which of the following relation is correct for phase angle and reactive power?
A
Reactive power = apparent power ∗ sin θ
B
Reactive power = apparent power ℠sin θ
C
Reactive power = Real power ∗ sin θ
D
Reactive power = Real power ℠sin θ
16
Which of the following is the expression of power factor?
A
cos θ
B
sin θ
C
tan θ
D
sec θ
17
What is the relation for phase angle (in degree) of a signal with time delay Δt and frequency f?
A
3600∗f.∗ Δt
B
1800∗f∗ Δt
C
3600 ℠(f∗ Δt)
D
1800 ℠(f∗ Δt)
18
Which of the following cannot be used as a unit for frequency?
A
Hz
B
BPM
C
RPM
D
S
19
Which of the following represents the correct relationship between frequency and angular frequency?
A
ω=2πf
B
ω=πf
C
f=2πω
D
f=πω
20
What will be the frequency of a system in which 35 events occur in 7 seconds?
A
7Hz
B
35Hz
C
5Hz
D
10Hz
21
Which of the following device can be used for measurement of frequency?
A
Voltmeter
B
Ammeter
C
Stroboscope
D
None of the mentioned
22
All waves in electromagnetic spectrum has the same speed in vacuum.
A
True
B
False
C
all of the above
D
None of the mentioned
23
Which of the following frequency range represents an audible frequency range of humans?
A
Below 20Hz
B
Between 20Hz and 20 KHz
C
Above 20 KHz
D
All of the Mentioned
24
Which of the following is the correct relationship between speed of light in vacuum and frequency of light?
A
c=fλ
B
c=f
C
λ=cf
D
c=λ2
25
In a dispersive medium, speed of light depends on frequency.
A
True
B
False
C
all of the above
D
None of the mentioned
26
Which of the following range represents frequency range of rainbow colors?
A
Below 4×1014Hz
B
Between 4×1014Hz and 8×1014Hz
C
Above 8×1014Hz
D
Between 0Hz and 8×1014Hz
27
What will be the frequency of the signal A sin (4πt+ɸ)?
A
2Hz
B
0.5Hz
C
2Ï€Hz
D
4Ï€Hz
28
Phase difference between two voltages at frequencies above 10Hz can be measured using _________
A
CRO
B
Voltmeter
C
X-Y plotter
D
Multi meter
29
In a time interval measuring device, two pulses are used _________
A
To produce triangular wave
B
To start and stop gate circuit
C
To produce sinusoidal signal
D
None of the mentioned
30
Start and stop pulses are produced by ______
A
Gate circuit
B
Time discriminators
C
Oscillators
D
None of the mentioned
31
TDC devices are used for ______
A
Indicating frequency of signal
B
Indicating time delay in analog format
C
Indicating time delay in digital format
D
Indicating voltage level
32
Measuring range is not an important parameter in TIM.
A
True
B
False
C
all of the above
D
None of the mentioned
33
When interpolation techniques are used?
A
When interpolation techniques are used?
B
For high resolution of measurement
C
For high range of measurement and high resolution of the measurement is required
D
Not the mentioned
34
What is the use of PWM technology?
A
To amplify output voltage
B
To reduce output voltage
C
For controlling supply voltage
D
For measuring voltage
35
What do you mean by duty cycle?
A
Ratio of on time and total time period
B
Ratio of off time and total time period
C
On time
D
Off time
36
Time require by the signal to reach 63% of amplitude is known as ______
A
Duty cycle
B
Time delay
C
Time constant
D
On time
37
What is the use of a gate circuit in TIM?
A
To produce sinusoidal signal
B
To produce pulse signal
C
To on and off input signal
D
None of the mentioned
38
TDC and TIM are used for the same application.
A
True
B
False
C
all of the above
D
None of the mentioned
39
Which of the given statement is true for a zero-order system?
A
Varying transfer function with time
B
Constant transfer function
C
Transfer function = 1/S
D
Transfer function = 1/s2
40
Which of the given factor determines the order of a system?
A
Maximum power of ‘S’ in the characteristic equation
B
Minimum power of ‘S’ in the characteristic equation
C
Value of constant value
D
None of the mentioned
41
Transfer function of a system is given by G(S) = b0 â„ a1S+a0. What will be the static sensitivity of system?
A
b0 â„ a0
B
b0 â„ a1
C
a0 â„ b0
D
a1 â„ b0
42
What will be the time constant for a system represented by transfer function G(S) = 5/(3S+2)?
A
3
B
2.5
C
1.5
D
2
43
What will be the damping ratio of a system with transfer function G(S) = 5/(3S2+2S+3)?
A
1.5
B
0.5
C
0.33
D
2
44
Which of the following represent condition for an over-damped system?
A
Damping ratio<0
B
Damping ratio=0
C
Damping ratio=0.5
D
Damping ratio>1
45
Which of the following represents a system with transfer function G(S) = 5/(3S2+8S+3) ?
A
Over damped system
B
Un-damped system
C
Under damped system
D
None of the mentioned
46
For a ramp input in second order system, which of the following represents the correct relationship between natural frequency and steady state error?
A
Both are directly proportional
B
Both are inversely proportional
C
Both are equal
D
None of the mentioned
47
What will be the static sensitivity of a system with transfer function G(S) = 4/(5S2+8S+2)?
A
0.5
B
2
C
4
D
4/5
48
Transfer function of a system with input y(t) = t2/2 is given by 1/S. What will be the obtained output?
A
6t3
B
t3/6
C
t3
D
t4
49
Electrical network made up of resistor and inductor is a _______
A
Passive network
B
Active network
C
Low pass filter
D
High pass filter
50
Resistor is a ______ element.
A
Zero order
B
First order
C
Second order
D
None of the mentioned
Submit Quiz
Back to All Quizzes