GATE 2017- Set2 By: Lohit K Yadav

Which one of the following statements is TRUE for the ultrasonic machining (USM) process? In USM, the tool vibrates at subsonic frequency. USM does not employ magnetostrictive transducer. USM is an excellent process for machining ductile materials. USM often uses a slurry comprising abrasive-particles and water. A) B) C) D)

The standard deviation of linear dimensions P and Q are 3 micro-m and 4micro-m,respectively. When assembled, the standard deviation (in micro-m) of the resulting linear dimension (P+Q) is,

=2S

The emissive power of a blackbody is P. If its absolute temperature is doubled, the emissive power becomes. a) 2P b) 4P c) 8P d) 16P

The state of stress at a point is 0 and 50MPa. The maximum normal stress (in MPa) at that point is

Ven- S.gn= SO HPa n

Two coins are tossed simultaneously. The probability (upto two decimal points accuracy) of getting at least one head is

M,M M, 7 1, n) 0.25

Thank You

37 lessons,

6h 52m

Enroll

927

✕Download

Lohit Kumar Yadav

IRSME. Graduated in Mechanical engineering. Secured AIR 1 in ESE 2017. Believes in Quality Education for all.

U

Unacademy user

Chandresh Tripathi

a year ago

very helpful lesson
i request u to make video on pesticide residue in food also

1

Reply