One Stop GATE Forum: Instrumentation Engg GATE sample paper

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1
          In an INTEL 8085 microprocessor the
            ADDRESS-DATA bus and the DATA bus are
        
        
          Options
          
            
                
              
                  A) Non multiplexed
                  B) Multiplexed
                
                
                  C) Duplicated
                  D) Same as CONTROL bus
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          B
        
        
          

        
        
          2
          
            A 3 ½ digit nultimeter has an accuracy specification of (± 0.5%
            of reading ± 5 counts). If the meter reads 2.00 mA on a full scale
            of 20mA, the worst-case error in the reading is
          
        
        
          Options
          
            
                
              
                  A) 0.5%
                  B) 2.5%

                  
                
                
                  C) 3.0%  
                  D) 5.5% 

                  
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          C
        
        
          

        
        
          3
          The measurements of a source voltage are 5.9V,
            5.7V and 6.1V. The sample standard deviation of the readings is
        
        
          Options
          
            
                
              
                  A) 0.013
                  B) 0.04
                
                
                  C) 0.115
                  D) 0.2
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          D
        
        
          

        
        
          4
          
            Consider the  following systems:

            System 2: G(s) =
            

                
              
                  1
                
                
                  2(2s+1)
                
              
            
            

            System 1: G(s) =
            
                
              
                  1
                
                
                  2(5s+1)
                
              
            
            

            The true statement regarding the system is
        
        
          Options
          
            
                
              
                  A) Bandwidth of system 1 is greater than the
                    bandwidth of system 2

                  
                  B) Bandwidth of system 1 is lower than the
                    bandwidth of system 2

                  
                
                
                  C) Bandwidth of both the systems are the same

                  
                  D) Bandwidth of both the systems are infinite

                  
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          A
        
        
          

        
        
          5
          The transfer function of  a system is 
            
                
              
                  A
                
                
                  s² +
                    w²  
                
              
            
             The steady-state gain of the system to a unit-step input is
        
        
          Options
          
            
                
              
                  A)
                    
                        
                      
                          A
                        
                        
                          w²
                        
                      
                    
                  
                  B) 0
                
                
                  C) ¥
                  D) not possible to be determined
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          C
        
        
          

        
        
          6
          In 8085 microprocessor, CY flag may be set by
            the instruction
        
        
          Options
          
            
                
              
                  A) SUB
                  B) INX
                
                
                  C) CMA
                  D) ANA
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          A
        
        
          

        
        
          7
          V₁and V₂ are the input
            voltages of an instrumentation amplifier. The output of the
            instrumentation amplifier is found to be 100(V₁ – V₂)
            + 10^-4 (V₁ + V₂). The gain and the
            common mode rejection ratio (CMRR) of the instrumentation amplifier
            respectively are
        
        
          Options
          
            
                
              
                  A) (50, 60 dB)

                  
                  B) (50, 120 dB)

                  
                
                
                  C) (100, 60dB)

                  
                  D) (100, 120 dB) 

                  
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          C
        
        
          

        
        
          8
          
            The sequence x[n] whose z-transform is X[z] = e^(1/Z) is
          
        
        
          Options
          
            
                
              
                  A)
                    
                        
                      
                          1
                        
                        
                          n!
                        
                      
                    
                    u[n]
                  B)
                    
                        
                      
                          1
                        
                        
                          -n!
                        
                      
                    
                    u[-n]
                
                
                  C) (-1)ⁿ 
                    
                        
                      
                          1
                        
                        
                          n!
                        
                      
                    
                    u[n]
                  D)
                    
                        
                      
                          1
                        
                        
                          -(n+1)!
                        
                      
                    
                    u[-n-1]
                
              
            
          
        
        
          

          

        
        
          

        
        
          9
          The time taken by an ionized atom, of mass m kg
            and charge e Coulombs, pulsed into a field-free region with V volts,
            to reach a detector L meters away is 
        
        
          Options
          
            
                
              
                  A)
                    
                        
                      
                          1
                        
                        
                          L
                        
                      
                    
                    
                        
                      
                          Ö
                          
                            
                                
                              
                                  m
                                
                                
                                  2eV
                                
                              
                            
                          
                        
                      
                    
                  
                  B)
                    L
                    

                        
                      
                          Ö
                          
                            
                                
                              
                                  m
                                
                                
                                  2eV
                                
                              
                            
                          
                        
                      
                    
                  
                
                
                  C) m
                    
                        
                      
                          Ö
                          
                            
                                
                              
                                  L
                                
                                
                                  2eV
                                
                              
                            
                          
                        
                      
                    
                  
                  D)
                    
                        
                      
                          2
                        
                        
                          L
                        
                      
                    
                    
                        
                      
                          Ö
                          
                            
                                
                              
                                  m
                                
                                
                                  2eV
                                
                              
                            
                          
                        
                      
                    
                  
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          B
        
        
          

        
        
          10
          The clock frequency of a timer-counter is
            10MHz.  The timer-counter is used in the period mode and the
            input to the timer-counter is a square wave of frequency 2 kHz. The
            display of the timer-counter will show a value
        
        
          Options
          
            
                
              
                  A) 200
                  B) 2000
                
                
                  C) 5000
                  D) 50000
                
              
            
          
        
        
          

          

        
        
          Correct Answer
          C


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