This set of Mechatronics Questions & Answers for Exams focuses on “System Structure and Signal Flow in Pneumatic Systems”.

1. Which transform converts the function from time domain to “s” domain (complex frequency domain)?

a) Laplace Transform

b) Fourier Transform

c) Z Transform

d) InverseLaplace Transform

View Answer

Explanation: Laplace transform converts the function from time domain to “s” domain (complex frequency domain). It is an integral that transforms the function from real time domain to a function of complex variable “s”.

2. Who invented Laplace transform?

a) Pierre-Simon Laplace

b) Pitas Laplace

c) Charles young

d) Charles Wheatstone

View Answer

Explanation: Pierre-Simon Laplace invented Laplace transform. It is an integral that transforms the function from real time domain to a function of complex variable “s”. The “s” represents a complex frequency domain.

3. Which signal cannot be determined through mathematical equation?

a) Imaginary signal

b) Non-Deterministic signal

c) Aperiodic signal

d) Power Signal

View Answer

Explanation: Non-Deterministic signal cannot be determined through mathematical equation. Its value at any point of time cannot be determined beforehand. Due to its random nature, it is also called as “Random Signal”.

4. What is the type of signal called, if it satisfies the equation x(t)=x(-t){where “t” represents time domain}?

a) Imaginary signal

b) Non-Deterministic signal

c) Odd Signal

d) Even Signal

View Answer

Explanation: If a signal satisfies the equation x(t)=x(-t) {where “t” represents time domain}, then the signal is called as even signal. A signal is said to be odd signal if it satisfies the equation x(t)=-x(-t) {where “t” represents time domain}.

5. Node and junction are same.

a) True

b) False

View Answer

Explanation: Node and junction are not same. A node is a meeting point of two circuit elements, it does not matter if it’s active or passive element of the circuit. A junction is a point where least three circuit paths meet.

6. Fourier transform converts the function from time domain to frequency domain.

a) True

b) False

View Answer

Explanation: Fourier transform converts the function from time domain to frequency domain. It decomposes a function of time to a function of frequency. This transform was proposed by Joseph Fourier in the year 1882.

7. Which Integrated circuit/module can generate square, sine and triangular waveforms?

a) ICL8038

b) LMK61A2-125M00SIAT

c) SLB700A/06VA

d) FN2060A-6-06

View Answer

Explanation: ICL8038can generate square, sine and triangular waveforms. LMK61A2-125M00SIAT is a crystal oscillator that can generate square signals. FN2060A-6-06 is an example of Power line filter. SLB700A/06VA is a force sensor.

8. What is the type of signal called, if it satisfies the equation x(t)=x(t+T) {where “t” represents time domain and T represents fundamental time period}?

a) Imaginary signal

b) Periodic signal

c) Odd Signal

d) Even Signal

View Answer

Explanation: If a signal satisfies the equation x(t)=x(t+T) {where “t” represents time domain and T represents fundamental time period}, then the signal is called as periodic signal. Periodic signals repeat itself after the fundamental time period.

9. What is the type of signal called, if it satisfies the equation x(t)=-x(-t) {where “t” represents time domain}?

a) Imaginary signal

b) Non-Deterministic signal

c) Odd Signal

d) Even Signal

View Answer

Explanation: If a signal satisfies the equation x(t)=-x(-t) {where “t” represents time domain}, then the signal is called as Odd signal. A signal is said to be even signal if it satisfies the equation x(t)=x(-t) {where “t” represents time domain}.

10. Which is an example of Square wave generator?

a) ICL8038

b) CMCP793V-500

c) SLB700A/06VA

d) FN2060A-6-06

View Answer

Explanation: ICL8038is an example of Square wave generator. It can generate square, sine and triangular waveforms. FN2060A-6-06 is an example of Power line filter. SLB700A/06VA is a force sensor. CMCP793V-500 is a velocity sensor.

11. What is the signal called if its value is defined only at fixed instants of time?

a) Discrete signal

b) Non-Deterministic signal

c) Random Signal

d) Deterministic signal

View Answer

Explanation: If the value of signal is defined only at fixed instants of time then it is called as “Discrete Signal”. When the value of signal is defined at every instants of time then it is called as “Continuous Signal”.

12. A System is a specified process which produces signal.

a) True

b) False

View Answer

Explanation: A System is not a specified process which produces signal. Any process that can produce an output based on the input provided can be termed as a “System”. In general, a process that produces output signal based upon input signal is termed as a system.

13. Z transform cannot convert discrete frequency signal to complex time domain.

a) True

b) False

View Answer

Explanation: Z transform cannot convert discrete frequency signal to complex time domain. It converts discrete time signal to complex frequency domain. The discrete time signal constitutes a sequence of real and complex numbers.

14. How many minimum number of circuit path, meeting at a point make up a junction?

a) 1

b) 2

c) 3

d) 4

View Answer

Explanation: At least 3 circuit paths meeting at a point make up a junction. It can be any point on the electric circuit connected through electrical conductors. It is a point of junction of two or more branches.

15. Which type of signal is also referred as random signal?

a) Imaginary signal

b) Non-Deterministic signal

c) Deterministic signal

d) Power Signal

View Answer

Explanation: Non-Deterministic signal is also referred as random signal. These signals cannot be expressed in the form of mathematical equation. The value at any value of time cannot be determined.

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