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Assessment
Comprehension And Aptitude Skills Lab - End Assessment - Part A - Section - B
50 Questions
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By Sivasu1708 | Updated: Oct 17, 2014
| Attempts: 137
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Question
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1.
Which of the following gates is universal gate?
NOT
OR
AND
NOR
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About This Quiz
This session carries 50 question to be answered in 60 minutes. Take time in answering.
2.
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2.
A circuit whose output is proportional to the difference between the input signals is considered to be which type of amplifier?
Common-mode
Operational
Differential
Darlington
Submit
3.
Flapper nozzle is used in a/an __________ controller
Pneumatic
Electronic
Hydraulic
None of these
Submit
4.
Thermal wells are used in the temperature measurement to
Reduce measuring lag
Increase the sensitivity
Guard against corrosive and oxidising action on thermocouple materials
Increase the fidelity
Submit
5.
Maxwell bridge is used for measurement of
Frequency
Capacitance
Inductance
Resistance
Submit
6.
The voltage follower has a
Closed-loop bandwidth of zero
Small open-loop voltage gain
Closed-loop voltage gain of unity
Large closed-loop output impedance
Submit
7.
Response of a system to a sinusoidal input is called __________ response.
Frequency
Impulse
Unit step
None of these
Submit
8.
Ohm's law is not applicable to
Option 1
Semi-conductors
High currents
DC circuits
Submit
9.
Which is the octal form of the decimal number 29?
29
35
10
13
Submit
10.
A negative gain margin expressed in decibels means a/an __________ system.
Critically damped
Stable
Unstable
None of these
Submit
11.
An XOR gate produces output only when two inputs are
High
Low
Equal
Different
Submit
12.
Load cells are used for the measurement of
Velocity
Stress
Strain
Weight
Submit
13.
A TRIAC:
Can trigger only on positive gate voltages
Can trigger only on negative gate voltages
Can be triggered by either a positive or a negative gate voltage
Cannot be triggered with gate voltages
Submit
14.
The closed loop pole of a stable second order system could be
Both real and positive
Complex conjugate with positive real parts
One real positive and the other real negative
Both real and negative
Submit
15.
Magnetic flowmeters are generally not used for the velocity/flow measurement of hydrocarbons due to their
Low thermal conductivity
Low electrical conductivity
Low flash point
High viscosity index
Submit
16.
In a DMA write operation the data is transferred
From I/O to memory
From memory to I/O
From memory to memory
From I/O to I/O
Submit
17.
What is the moving part of a linear variable differential transformer?
Primary
Secondary
Diaphragm
Core
Submit
18.
Op-amps used as high- and low-pass filter circuits employ which configuration?
Open-loop
Noninverting
Comparator
Inverting
Submit
19.
An astable multivibrator is also known as a
One-shot multivibrator
Bistable multivibrator
Free-running multivibrator
Monostable multivibrator
Submit
20.
The ratio between differential gain and common-mode gain is called
Common-mode rejection
Differential-mode rejection
Differential-mode rejection
Phase
Submit
21.
The resolution of an indicating instrument is
The smallest change in the output reading due to drifting of pointer
The smallest change in the applied stimulus that will indicate the detectable change in the reflection
The difference between various readings for the same applied stimulus
None of these
Submit
22.
Psychrometer determines the
Humidity of gases
Moisture content of solids
Hygroscopic nature of solids
Water of crystallisation
Submit
23.
In a transistor, collector current is controlled by:
Base current
Collector voltage
Collector resistance
All
Submit
24.
Most important advantage of an IC is its
Most important advantage of an IC is its
Very low cost
Extremely high reliability
Extremely small size
Very small weight
Submit
25.
Pick out the first order system from among the following.
Interacting system of two tanks in series
Non-interacting system of two tanks in series
Damped vibrator
Mercury in glass thermometer kept in boiling water
Submit
26.
The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple.
Platinum-platinum/rhodium
Chromel-alumel
Iron-constantan
None of these
Submit
27.
The time constant of a unity gain, first order plus time delay process is 5 min. If the phase lag at a frequency of 0.2 rad/min is 60°, then the dead time (in minutes) is
π/12
5π/12
π/6
π/3
Submit
28.
A noninverting closed-loop op-amp circuit generally has a gain factor
Of zero
Greater than one
Less than one
Equal to one
Submit
29.
When transistors are used in digital circuits they usually operate in the
Breakdown region
Linear region
Saturation and cutoff regions
Active region
Submit
30.
Which of the following is not a differential pressure flow meter ?
Flow nozzle
Rotameter
Venturimeter
Orificemeter
Submit
31.
Pirani gauge is used for the measurement of
Liquid level under pressure
Liquid level at atmospheric pressure
High vacuum
Very high pressure
Submit
32.
Which of the following controllers has maximum offset ?
P-controller
P-I controller
P-D controller
P-I-D controller
Submit
33.
What does a hall effect sensor sense?
Temperature
Moisture
Magnetic fields
Pressure
Submit
34.
Kelvin double bridge is best suited for the measurement of
Inductance
Capacitance
Low resistance
High resistance
Submit
35.
Which of the following thermocouples will give the highest output for the same value of hot and cold junction temperature ?
Platinum-platinum + rhodium
Iron-constantan
Chromel-constantan
All will give the same output
Submit
36.
A typical example of a physical system with under damped characteristic is a
Thermocouple kept immersed in a liquid filled thermowell
Spring loaded diaphragm valve.
U-tube manometer
CSTR with first order reaction
Submit
37.
Working principle of radiation pyrometer is based on the
Kirchoffs law
Seebeck effect
Wien's law
Stafan-Boltzman law
Submit
38.
The SCR can be termed as
DC switch
AC switch
Square-wave switch
Either DC or AC switch
Submit
39.
Bode diagram are generated from output response of the system subjected to which of the following input?
Impulse
Sinusoidal
Ramp
Step
Submit
40.
An ideal operational amplifier has
Infinite bandwidth
Infinite output impedance
Zero input impedance
All
Submit
41.
The amplitude ratio for the sinusoidal response of a __________ is 1.
First order system
Second order system
Transportation lag
None of these
Submit
42.
Which of the following recorder gives slow response
X-Y recorder
Oscillographic
Galvanometric
Magnetic
Submit
43.
Positioning controllers are used for
Temperature changes
Low loads
High loads
Flow rate changes
Submit
44.
Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ?
Peltier effect
Seebeck effect
Thomson effect
None of these
Submit
45.
Which of the following controllers has the least maximum deviation ?
P-controller
P-I controller
P-I-D controller
P-D controller
Submit
46.
Nichol's chart deals with
Frequency response values of controllers
Closed loop values Vs frequency response values
Closed loop values Vs open loop values
Open loop values Vs frequency response values
Submit
47.
Which instrument has the lowest resistance?
Voltmeter
Ammeter
Megger
Frequency meter
Submit
48.
A system with a double pole at the origin is unstable since the corresponding term in the time domain
Is a constant
Grows exponentially with time
Grows linearly with time
Decays linearly with time
Submit
49.
On-off controllers are normally used for
Flow rate changes
Temperature changes
Low loads
None of these
Submit
50.
Which of the following is the dynamic characteristics of an instrument ?
Sensitivity
Dead zone
Reproducibility
Fidelity
Submit
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All (50)
Unanswered (
)
Answered (
)
Which of the following gates is universal gate?
A circuit whose output is proportional to the...
Flapper nozzle is used in a/an __________ controller
Thermal wells are used in the temperature measurement to
Maxwell bridge is used for measurement of
The voltage follower has a
Response of a system to a sinusoidal input is called __________...
Ohm's law is not applicable to
Which is the octal form of the decimal number 29?
A negative gain margin expressed in decibels means a/an __________...
An XOR gate produces output only when two inputs are
Load cells are used for the measurement of
A TRIAC:
The closed loop pole of a stable second order system could be
Magnetic flowmeters are generally not used for the velocity/flow...
In a DMA write operation the data is transferred
What is the moving part of a linear variable differential transformer?
Op-amps used as high- and low-pass filter circuits employ which...
An astable multivibrator is also known as a
The ratio between differential gain and common-mode gain is called
The resolution of an indicating instrument is
Psychrometer determines the
In a transistor, collector current is controlled by:
Most important advantage of an IC is its Most important advantage...
Pick out the first order system from among the following.
The temperature of tempering oil baths maintained at 400°C during...
The time constant of a unity gain, first...
A noninverting closed-loop op-amp circuit generally has a gain...
When transistors are used in digital circuits they usually operate in...
Which of the following is not a differential pressure flow meter ?
Pirani gauge is used for the measurement of
Which of the following controllers has maximum offset ?
What does a hall effect sensor sense?
Kelvin double bridge is best suited for the measurement of
Which of the following thermocouples will give the highest output for...
A typical example of a physical system with under damped...
Working principle of radiation pyrometer is based on the
The SCR can be termed as
Bode diagram are generated from output response of the system...
An ideal operational amplifier has
The amplitude ratio for the sinusoidal response of a __________ is 1.
Which of the following recorder gives slow response
Positioning controllers are used for
Which of the following relates the emf. generated in a single...
Which of the following controllers has the least...
Nichol's chart deals with
Which instrument has the lowest resistance?
A system with a double pole at the origin is unstable since the...
On-off controllers are normally used for
Which of the following is the dynamic characteristics of an instrument...
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