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There are two benches A and B and one chair. Three persons can sit on each of these benches and one on the chair. Seven persons, Aman, Bhaskar, Chetan, Dablu, Ekta, Fauzia, and Ganesh, are to be seated on these benches and the chair following certain constraints as given. (i) Fauzia does not sit on the same bench as Dablu. (ii) Ekta does not sit on the same bench as Dablu. (iii) Chetan can sit with Aman but not with Ganesh. (iv) Aman can sit with Dablu but not with Bhaskar or Ganesh. (v) Ganesh does not sit on the same bench as Fauzia. If Fauzia sits on Bench A and Chetan sits on Bench B, then who is sitting in the chair?
Sensitive bench drilling machine is capable of drilling holes up to ______ mm diameter.
For normal drilling, the work surface of sensitive bench drilling machine is kept vertical.
Which of the following gauge is generally used to measure distance between top of ball and tapered hole in the method of checking angle of a tapered hole?
In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some red are wood. II. No wood is bench. Conclusions: I. No bench is red. II. No bench is wood. Ill. Some red are bench.
A displacement sensor (a dial indicator) measures the lateral displacement of a mandrel mounted on the taper hole inside a drill spindle. The mandrel axis is an extension of the drill spindle taper hole axis and the protruding portion of the mandrel surface is perfectly cylindrical measurements are taken with the sensor placed at two positions P and Q as shown in the figure. The readings are recorded as Rx = maximum deflection minus minimum deflection, corresponding to sensor position at X, over one rotation. If RP = RQ > 0, which one of the following would be consistent with the observation?
Sensitive type of drilling machine is the simplest type of drilling machine.
In a room-and-pillar stope, bench blasting is conducted using ANFO having density of 800 kg/m3. The specific gravity of rock is 2.5, hole diameter is 100 mm and spacing to burden ratio is 1.3. The charge length of each blast hole is 80% of the hole length. For a desired powder factor of 0.48 kg/tonne, the spacing and burden of the blast pattern in m respectively are
Sensitive bench drilling machine is quite large in size.
Sensitive bench drilling machine is used for____