# Mechatronics Test Questions Set - 2

1)   Arrange the following components of temperature measurement system according to measurement system

Hot body, Display system, Thermocouple, Amplifier and converter

a. Hot body----Display system-----Thermocouple-----Amplifier and converter
b. Hot body----Amplifier and converter-----Thermocouple-----Display system
c. Hot body----Thermocouple-----Amplifier and converter-----Display system
d. Display system-----Hot body----Thermocouple-----Amplifier and converter
 Answer  Explanation  Related Ques ANSWER: Hot body----Thermocouple-----Amplifier and converter-----Display system Explanation: No explanation is available for this question!

2)   The characteristic that provides an output with respect to the relation with the input is called as ___________

a. calibration of a system
b. response of a system
c. characteristic relation of a system
d. instrumentation of a system
 Answer  Explanation  Related Ques ANSWER: response of a system Explanation: No explanation is available for this question!

3)   The study of relationship between the input and output, when the input is invariant with respect to time is called as_____

a. static characteristics of instruments
b. dynamic characteristics of instruments
c. variable characteristics of instruments
d. none of the above
 Answer  Explanation  Related Ques ANSWER: static characteristics of instruments Explanation: No explanation is available for this question!

4)   The process of establishment of a relationship between the input to the instrument and output from the instrument is called as_____

a. static sensitivity
b. static characterization
c. static accuracy
d. static calibration
 Answer  Explanation  Related Ques ANSWER: static calibration Explanation: No explanation is available for this question!

5)   ________ is the curve plotted between input and output by giving known inputs to an instrument and obtaining corresponding outputs.

a. characteristic curve
b. accuracy curve
c. calibration curve
d. sensitivity curve
 Answer  Explanation  Related Ques ANSWER: calibration curve Explanation: No explanation is available for this question!

6)   The displacement of a mass attached to a spring in mechanical system is corresponding to _______ in the electrical system

a. inductance
b. resistance
c. capacitance
d. current
 Answer  Explanation  Related Ques ANSWER: current Explanation: No explanation is available for this question!

7)   What is the transfer function of an electrical system given below?

Where,
I: Current
V: Voltage
R: Resistance a. V
b. 1/V
c. I
d. 1/R
 Answer  Explanation  Related Ques ANSWER: 1/R Explanation: No explanation is available for this question!

8)   Which of the following statements are true for block diagrams?

1. Block diagrams are the pictorial representation of the system
2. The complicated systems can be easily represented by connecting different blocks
3. Block diagram represents the relationship between input and output of the system

a. Statements (1) and (2)
b. Statements (2) and (3)
c. Statements (1) and (3)
d. Statements (1), (2) and (3)
 Answer  Explanation  Related Ques ANSWER: Statements (1), (2) and (3) Explanation: No explanation is available for this question!

9)   A corresponding block of an element is drawn by inserting ________ of that element inside the block.

a. the value of corresponding input
b. a transfer function
c. the value of corresponding output
d. the name
 Answer  Explanation  Related Ques ANSWER: a transfer function Explanation: No explanation is available for this question!

10)   What is/are the maximum number of arrow/s (Input/s) allowed to go inside the block?

a. One
b. Two
c. Three
d. Four
 Answer  Explanation  Related Ques ANSWER: One Explanation: No explanation is available for this question!

11)   The task of time sharing, in which large number of data signals are sent through cables or buses, is performed by____

a. sensors or transducers
b. central processing unit (CPU)
c. multiplexer
d. analog to digital converter
 Answer  Explanation  Related Ques ANSWER: multiplexer Explanation: No explanation is available for this question!

12)   Data acquisition of all the physical quantities in the real world is done in

a. the analog mode
b. the digital mode
c. either analog mode or digital mode
d. none of the above
 Answer  Explanation  Related Ques ANSWER: the analog mode Explanation: No explanation is available for this question!

13)   According to Nyquist theorem, the sampling rate should be _________ as fast as the highest frequency of the signal being measured or sampled.

a. twice
b. thrice
c. ten times
d. hundred times
 Answer  Explanation  Related Ques ANSWER: twice Explanation: No explanation is available for this question!

14)   Digital to Analog Conversion is ______________ Analog to Digital Conversion.

a. less complex than
b. more complex than
c. as complex as
d. unpredictable
 Answer  Explanation  Related Ques ANSWER: less complex than Explanation: No explanation is available for this question!

15)   Micro-controllers are ________________ than the PLCs.

a. bulky and expensive
b. bulky but cheaper
c. portable and cheaper
d. portable but expensive
 Answer  Explanation  Related Ques ANSWER: portable and cheaper Explanation: No explanation is available for this question!

16)   How is the noise immunity of PLCs to electrical noises as compared to that of conventional relay controllers?

a. poor
b. excellent
c. as good as noise immunity of conventional relay controllers
d. unpredictable
 Answer  Explanation  Related Ques ANSWER: poor Explanation: No explanation is available for this question!

17)   The capability of convention relay systems for complex operations is ___________ that of the PLCs .

a. poor than
b. excellent than
c. as good as
d. unpredictable as
 Answer  Explanation  Related Ques ANSWER: poor than Explanation: No explanation is available for this question!

18)   How is the speed of operation of conventional relay system as compared to digital controllers?

a. very slow
b. very fast
c. same
d. almost similar
 Answer  Explanation  Related Ques ANSWER: very slow Explanation: No explanation is available for this question!

19)   The type of memory which is fast and temporarily stores the data which are immediately required for use is called as______.

a. HDD
b. ROM
c. RAM
d. SSD
 Answer  Explanation  Related Ques ANSWER: RAM Explanation: No explanation is available for this question!

20)   When ___________ contacts are actuated, they disrupt the power supply through them.

a. normally open type
b. normally closed type
c. both a. and b.
d. none of the above
 Answer  Explanation  Related Ques ANSWER: normally closed type Explanation: No explanation is available for this question!

21)   Which method is used for stability analysis?

a. Nyquisit criteria
b. Root locus method
c. Routh Hurwitz criteria
d. All of the above
 Answer  Explanation  Related Ques ANSWER: All of the above Explanation: No explanation is available for this question!

22)   What is the ratio of amplitude of response to that of the input called?

a. Response
b. Gain
c. Phase
d. Frequency
 Answer  Explanation  Related Ques ANSWER: Gain Explanation: No explanation is available for this question!

23)   In all cases of input frequency, if the gain starts reducing, the phase angle will _______.

a. start reducing
b. start increasing
c. be remain constant
d. be unpredictable
 Answer  Explanation  Related Ques ANSWER: start reducing Explanation: No explanation is available for this question!

24)   If the frequency of the input signal to a system is increased, the amplitude of the output _______.

a. start reducing
b. start increasing
c. be remain constant
d. be unpredictable
 Answer  Explanation  Related Ques ANSWER: start reducing Explanation: No explanation is available for this question!

25)   __________ is the time required for the response to reach 50% of the final value in the first attempt.

a. Rise time
b. Peak time
c. Settling time
d. Delay time
 Answer  Explanation  Related Ques ANSWER: Delay time Explanation: No explanation is available for this question!

26)   Consider the following graph of Controller Characteristics of On-Off Control. The region shown between curve A and curve B is called as________. b. hysteresis
c. both a. and b.
d. none of the above
 Answer  Explanation  Related Ques ANSWER: both a. and b. Explanation: No explanation is available for this question!

27)   Which of the following is/are the drawback/s of proportional control?

1. Proportional control system is complicated and costly.
2. Proportional control system is not suitable for pressure temperature and flow control problems
3. If there are sudden disturbance, the proportional control system takes time to stabilize.

a. (1)
b. (2)
c. (3)
d. (1), (2) and (3)
 Answer  Explanation  Related Ques ANSWER: (3) Explanation: No explanation is available for this question!

28)   Shifting of set point and adjusting its new value by the controller, when the value of disturbance increases, is called as_______.

a. set-shift
b. offset
c. stabilization
d. none of the above
 Answer  Explanation  Related Ques ANSWER: offset Explanation: No explanation is available for this question!

29)   The range of control of controller __________ due to presence of offset.

a. increases
b. decreases
c. remains constant
d. cannot say
 Answer  Explanation  Related Ques ANSWER: decreases Explanation: No explanation is available for this question!

30)   If the value of error increases, the changing speed of controller output __________.

a. increases
b. decreases
c. remains constant
d. cannot say
 Answer  Explanation  Related Ques ANSWER: remains constant Explanation: No explanation is available for this question!
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