GATE (Graduate Aptitude Test in Engineering) Instrumentation: Questions 48  51 of 85
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Question number: 48
» Digital Electronics » Basic of Number System
Appeared in Year: 2011
Question
The base of the number system for the addition operation 24 + 14 = 41 to be true is
Choices
Choice (4)  Response  

a.  7 

b.  6 

c.  5 

d.  8 

Question number: 49
» Digital Electronics » Combinational Logic Circuits, Minimization of Boolean Functions
Appeared in Year: 2013
Question
A bulb in a staircase has two switches, one switch being at the ground floor and the other one at the first floor. The bulb can be turned ON and also can be turned OFF by any one of the switches irrespective of the state of the other switch. The logic of switching of the bulb resembles
Choices
Choice (4)  Response  

a.  An AND gate 

b.  An EXOR gate 

c.  A NAND gate 

d.  An OR gate 

Question number: 50
» Digital Electronics » Sequential Circuits,FlipFlops, Counters, Shift Registers
Appeared in Year: 2013
Question
The digital circuit shown below uses two negative edge–triggered D–flip–flops. Assuming initial condition of and as zero, the output of this circuit is
Choices
Choice (4)  Response  

a.  00, 11, 10, 01, 00… 

b.  00, 01, 11, 10, 00…. 

c.  00, 01, 10, 11, 00… 

d.  00, 01, 11, 11, 00… 

Question number: 51
» Digital Electronics » Combinational Logic Circuits, Minimization of Boolean Functions
Appeared in Year: 2011
Question
For the Boolean expression , the minimized Product of Sum (POS) expression is
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

