A compound gear train with gears P, Q, R and S has number of teeth 20, 40, 15 and 20, respectively. Gears Q and R are mounted on the same shaft as shown in the figure below. The diameter of the gear Q is twice that of the gear R..
Consider one-dimensional steady state heat conduction, without heat generation, in a plane wall; with boundary conditions as shown in the figure below. The conductivity of the wall is given by k = k0 + bT ..
Q. A link OB is rotating with a constant angular velocity of 2 rad/s in counter clockwise direction and a block is sliding radially outward on it with an uniform velocity of 0.75 m/s with respect to the rod..
A rod of length L having uniform cross-sectional area A is subjected to a tensile force P as shown in the figure below. If the Young’s modulus of the material varies linearly from E1 to E2 along the length of the rod, the normal stress developed at the section-SS is
A strain gauge forms one arm of the bridge shown in the figure below and has a nominal resistance without any load as Rs = 300 ohm . Other bridge resistances are R1 = R2 = R3 = 300 ohm …
The separately excited dc motor in the figure below has a rated armature current of 20 A and a rated armature voltage of 150 V. An ideal chopper switching at 5 kHz is used to control the armature voltage …
Q. ভারতবর্ষে দাস বংশের প্রতিষ্ঠাতা কে ছিলেন ?
[WBSSC Practice]
A. মামুদ
B. মহম্মদ ঘোরী
C. কুতুবুদ্দিন আইবক
D. ইলতুৎ মিস
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