Semiconductors & Communication · JEE Main previous year questions

2014 3 questions

1. Q432014 · 6 Apr 2014 · Shift 1
   
   1. A.$\frac{1+\sin \alpha }{1-\sin \alpha }$
   2. B.$\frac{1+\cos \alpha }{1-\cos \alpha }$
   3. C.$\frac{1+\tan \alpha }{1-\tan \alpha }$
   4. D.$\frac{1+\sin \alpha }{1-\cos \alpha }$
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   Answer: C

2. Q552014 · 6 Apr 2014 · Shift 1

   The current voltage relation of diode is given by $I=\left(e^{1000V/T}-1\right)\mathrm{mA}$, where the applied voltage $V$ is in volts and the temperature $T$ is in degree kelvin. If a student makes an error measuring $\pm 0.01\mathrm{V}$ while measuring the current of $5\mathrm{mA}$ at $300\mathrm{K}$, what will be the error in the value of current in $\mathrm{mA}$?

   1. A.$0.2\mathrm{mA}$
   2. B.$0.02\mathrm{mA}$
   3. C.$0.5\mathrm{mA}$
   4. D.$0.05\mathrm{mA}$
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   Answer: A

3. Q592014 · 6 Apr 2014 · Shift 1
   
   1. A.
   2. B.
   3. C.
   4. D.
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   Answer: A