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Consider the schema Sailors(sid, sname, rating, age) with the following data Sid Sname Rating age 22 Dustin 7 45 29 Borg 1 33 31 Pathy 8 55 32 Robert 8 25 58 Raghu 10 17 64 Herald 7 35 71 Vishnu 10 16 74 King 9 35 85 Archer 3 26 84 Bob 3 64 96 Flinch 3 17 For the query SELECT S.rating, AVG(S.age) AS avgage FROM Sailors S Where S.age >= 18 GROUP BY S.rating HAVING 1 < (SELECT COUNT(*) FROM Sailors S2 where S.rating = S2.rating) The number of rows returned is
In a regulated power supply, two similar 15 V zeners are connected in series. The input voltage is 45 V d.c. If each Zener has a maximum current rating of 300 mA, what should be the value of the series resistance?
Which of the following statement/s is/are relating to credit rating agencies?
1. The three largest credit rating agencies rate India's sovereign debt at the highest investment grade.
2. CRISIL is the largest credit rating agency in India but is not among the largest three in the world.
3. The three largest credit rating agencies in the world are Moody's, Standard and Poor's and Fitch.
Two similar 15 V Zeners are connected in series. What is the regulated output voltage?
When an electric current coil of a wattmeter is connected to the electric current path R and the voltage coil is connected between the electric current R path and the neutral side of the balanced three phase supply, it shows 10 kW. The line voltage along the phase sequence RYB is 400 V. The current drawn by the current path is 54 A. What is the new reading of the wattmeter if the voltage coil is connected between the lines B and the Y paths, even if the electric current coil is continuously present in the line R?
Consider the following statement: a) When resistance is connected to the AC source, the current leads the voltage. b) When resistance is connected to the AC source, the current lags behind the voltage. c) When resistance is connected to the AC source, the current and the voltage are in the same phase. Which of the following statement is correct?
A 400 V, 50 Hz three phase balanced source ripples to a star connected load whose rating is S(=300+j400) kVA. The rating of the delta connected capacitor bank needed to bring p.f. to 0.9 lagging is _______ KVAR.
For MOSFET’s SOA, as the pulse width goes on increasing, the maximum voltage rating ____ & current rating ____
Shweta has connected a cell with a bulb. The bulb didn't glow. What could be the reasons? A. Bulb was connected by the positive terminal from both ends. B. One end of the bulb was connected with a positive terminal and another end was connected with a negative terminal.  C. Bulb was connected by the negative terminal from both ends D. Bulb was fuse.
Which of the following statements regarding tree are correct? (A) All the links of a tree together does not constitute the complement of the corresponding tree (B) A connected subgraph of a connected graph is a tree if there exist (n - 1) nodes of the group (C) A connected subgraph of a connected graph is a tree if there exist many paths between any pair of nodes in it (D) The number of terminal nodes of end vertices of every tree are atleast two (E) Every connected graph has atleast one tree Choose the correct answer from the options given below: (1) (A) and (B) only (2) (B) and (C) only (3) (B) and (D) only (4) (D) and (E) only