Exercise :: Exam Questions Papers - Exam Paper 9
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1. | If X = 1 in the logic equation [X + Z { Y + (Z + X Y)}] { X + Z (X + Y)} = 1, then |
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Answer: Option D Explanation: [1 + z{y + z + y}][0 + z] = 1, z = 1, z = 0. |
2. | (22)4 + (101)3 - (20)5 = (x)4 + (4)x+1 where x > 4. The value of x is |
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Answer: Option C Explanation: (22)4 + (10)10 - (10)10 = (22)4 Since x > 4, i.e. all the number systems with base greater than 4. All these will contain symbol '4' which will have same value in all bases. Converting 4 into base '4' system Now (22)4 = (x)4 + (10)4 ∴ (x)4 = (22)4 - (10)4 = (12)4 ∴ x = 12. |
3. | Consider a system with the transfer function |
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Answer: Option C Explanation: ξ = 0.5, We take second term only
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4. | For the system with given characteristic equation |
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Answer: Option D Explanation: Apply Routh Hurwitz criteria. |
5. | A series RLC circuit has a resonance frequency of 1 kHz and a quality factor Q = 100. If each of R, L and C is doubled from its original value, the new Q of the circuit is |
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Answer: Option B Explanation: Resonant frequency Quality factor = where R, L, C all are doubled, then
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