TECH QUIZ - SETA - MEDIUM.pptxhhthuigghhjj

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1. 1. What is the time complexity of finding the shortest path between all pairs of vertices in a weighted graph using Floyd- Warshall algorithm? A) O(V^2) B) O(V^3) C) O(V^2 log V) D) O(V^3 log V)

2. 2 . Which of the following is NOT a characteristic of a Schmitt trigger? A) Hysteresis B) Regenerative feedback C) High input impedance D) Comparator operation

3. 3. In a three-phase AC system, what is the phase difference between the currents of two consecutive phases? A) 60 degrees B) 90 degrees C) 120 degrees D) 180 degrees

4. 4. What is the purpose of the SQL "TRUNCATE" statement? A) To delete all rows from a table B) To delete specific rows from a table C) To delete a table from the database D) To delete a column from a table

5. 5 . Which type of material has the highest fatigue strength? A) Steel B) Aluminum C) Titanium D) Nickel

6. 6. What is the function of a resolver in a feedback control system? A) To convert mechanical motion into electrical signals B) To provide feedback on the position of the controlled system C) To control the speed of the controlled system D) To amplify the signal to the controlled system

7. 7 . Which algorithm is used for finding the strongly connected components in a directed graph? A) Dijkstra's algorithm B) Prim's algorithm C) Kruskal's algorithm D) Tarjan's algorithm

8. 8. What is the SI unit of capacitance? A) Farad B) Henry C) Ohm D) Volt

9. 9. Which of the following statements is true about a transformer with an efficiency of 100%? A) It has no losses B) It has no core losses C) It has no copper losses D) It has no load losses

10. 10. What is the purpose of the SQL "PIVOT" clause? A) To perform aggregation operations B) To transpose rows into columns C) To filter rows based on a condition D) To join two or more tables

11. 11. Which type of material has the highest thermal conductivity? A) Steel B) Aluminum C) Copper D) Titanium

12. 12. In a closed-loop control system, what is the purpose of a derivative controller? A) To eliminate steady-state error B) To improve system stability C) To provide damping D) To prevent overshoot

13. 13. Which algorithm is used for finding the maximum flow in a flow network with capacities and demands on vertices? A) Ford-Fulkerson algorithm B) Dijkstra's algorithm C) Prim's algorithm D) Kruskal's algorithm

14. 14. What is the unit of magnetic flux density in the International System of Units (SI)? A) Tesla B) Gauss C) Weber D) Henry per meter

15. 15. Which of the following is NOT a characteristic of an ideal current source? A) Infinite internal resistance B) Constant output current C) Independent of load resistance D) Zero output impedance

16. 16. What is the purpose of the SQL "MERGE" statement? A) To insert rows into a table B) To update rows in a table C) To delete rows from a table D) To perform a cross join

17. 17. Which type of welding process uses a shielding gas to protect the weld area from atmospheric contamination? A) TIG welding B) MIG welding C) Arc welding D) Gas welding

18. 18. What is the function of a pneumatic actuator in a robotic system? A) To convert electrical energy into mechanical motion B) To provide feedback on the position of a robot C) To control the flow of fluids in a hydraulic system D) To convert compressed air into linear or rotary motion

19. 19. Consider the following code snippet in x = [1, 2, 3] y = x.copy () print(x is y) What will be the output of this code? A) True B) False C) None D) Error

20. 20. Which of the following is NOT a characteristic of an operational amplifier (op-amp)? A) High input impedance B) Low output impedance C) High gain D) High bandwidth