ETEA Medical test consists 200 MCQ’s and all of them are from the syllabus of FSC. There is also a negative marking in ETEA test. Each correct answer consist 4 marks, if you give wrong answer 1 mark will be deducted and if you leave blank you will get 0. ETEA Medical test consist of four subjects Physics, chemistry, Biology and English. In ETEA test only those students can get good marks who have clear knowledge of concepts.
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Vectors & Equilibrium
If line of force passes through the axis of rotation, the moment arm is
- Answer A: 0
- Answer B: 1/2r
- Answer C: R
- Answer D: 2r
Moment arm is the perpendicular distance between the line of action of force and the axis of rotation. Therefore, if the line of action of force passes through the pivot point or axis of rotation the moment arm is zero.
Heat & Thermodynamics
At triple point of water, the pressure of gas is 2680 Pa. By changing T the pressure changed to 4870 Pa. The value of T is?
- 496 K
- 438 K
- 438 F
p.V = n.R.T
Since volume V and mass hence number of moles is constant:
p/T = n.R/V = constant
=> p1/T1 = p2/T2
=> T2 = T1.p2/p1
T1 is the triple point temperature of water, i.e
T1 = 0.010C = 273.16 K
T2 = 273.16 K * 4870Pa/2680Pa = 496.38K
Current flowing between two input terminals of operational amplifier is?
- In the range of milli amperes
- In the range of amperes
- None of the above
Input resistance of operational amplifiers is very high in the range of mega ohms. Therefore, practically no current flow between the two input terminals.