Download Aptitude Crack
img not found img not found

Digital Electronics

Q1: A dynamic RAM cell which holds 5 V has to be refreshed every 20 ms so that the stored voltage does not fall by more than 0.5 V. If the cell has a constant discharge current of 0.1 pA, the storage capacitance of cell is

A 4 x 10-6 F

B 4 x 10-9 F

C 4 x 10-12 F

D 4 x 10-15 F

ANS:D - 4 x 10-15 F

Q = 20 x 10-3 x 0.1 x 10-12 = 2 x 10-15 C and .



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.