Question 1 : " Which one of the following applications software's is used to obtain an accurate root locus for?"
1. " LISP"
2. " MATLAB"
3. " dBase"
4. " Oracle"
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Question 2 : " The breakaway point calculated mathematically must always lie on the root locus."
1. " True"
2. " False"
3.
4.
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Question 3 : " Consider the loop transfer function K(s+6)/(s+3)(s+5) In the root locus diagram the centroid will be located at:"
1. " -4"
2. " -1"
3. " -2"
4. " -3"
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Question 4 : " The addition of open loop zero pulls the root loci towards:"
1. " The left and therefore system becomes more stable"
2. " The right and therefore system becomes unstable"
3. " Imaginary axis and therefore system becomes marginally stable"
4. " The left and therefore system becomes unstable"
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Question 5 : " What is the number of the root locus segments which do not terminate on zeroes?"
1. " The number of poles"
2. " The number of zeroes"
3. " The difference between the number of poles and zeroes"
4. " The sum of the number of poles and the number of the zeroes"
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Question 6 : " Which one of the following are correct?
The root locus is the path of the roots of the characteristic equation traced out in the s-plane?"
1. " As the input of the system is changed"
2. " As the output of the system is changed"
3. " As a system parameter is changed"
4. " As the sensitivity is changed"
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Question 7 : Consider the following statements regarding root loci:
1. All root loci start from the respective poles of G(s) H(s)
2. All root loci end at the respective zeros of G(s) H(s) or go to infinity
3. The root loci are symmetrical about the imaginary axis of the s-plane
4. All root loci start and end from the respective poles of G(s) H(s) or go to infinity
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Question 8 : " If the gain of the system is reduced to a zero value, the roots of the system in the s-plane,"
1. " Coincide with zero"
2. " Move away from zero"
3. " Move away from poles"
4. " Coincide with the poles"
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Question 9 : " When the number of poles is equal to the number of zeroes, how many branches of root locus tends towards infinity?"
1. " 1"
2. " 2"
3. " 0"
4. " Equal to number of zeroes"
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Question 10 : While increasing the value of gain K, the system becomes
1. Less stable
2. More stable
3. Unstable
4. Absolute stable
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