Consider the table gift given below: Table: gift
giftid
G101
G102
G103
G104
G105
G106
giftname
Magic Mug
Golf Set
Little Astronomer
Renoir Paintings
French Gastronomy
Magic Set
price
500
3550
2000
1500
3000
1300
discount availability
9
10
5
15
20
18
15
15
7
10
30
30
Query:
SELECT g1.giftid, g1.giftname FROM gift g1 JOIN gift g2
ON g1.availability=g2.availability AND g1.discount>g2.discount
WHERE g1.discount>7
How many rows will be fetched when the above query gets executed?

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way