Digital Techniques (DTE) 22320 MCQ I-scheme pdf with answers
5. Programmable Logic
The inputs in the PLD are given through ____________.
a) NAND gates
b) OR gates
c)NOR gates
d)AND gates
Ans: d)AND gates
Outputs of the AND gate in PLD is known as ____________
a) Input lines
b) Output lines
c) Strobe lines
d) Control lines
Ans: b) Output lines
The least complex form of PLDs is_____.
a)FPGA
b)SPLD
c) CPLD
d) None of the above
Ans: b)SPLD
PAL stands for________________.
Recall/ Remembering
a) Programmable Array Logic
b) Programmable Logic Array
c) Programmable Array Loaded
d) Programmable Level Array
Ans: a)Programmable Array Logic
FPGA is the abbreviation for ______.
a) Five Programmable Gate Arrays
b) Field Programmable Gate Arrays
c) Field Programmable Gate Amplifier
d) none of the above
Ans: b) Field Programmable Gate Arrays
PLAs, PALs, CPLDs, and FPGAs are types of _____.
a) PLDs
b)SLDs
c) EPROM
d) SRAM
Ans: a) PLDs
The PLD which is aOTP(One Time Programmable) logic device is_______.
a) PLA
b) PAL
c)CPLD
d) SLD
Ans: b)PAL
A GAL is essentially a ________.
a) Non-reprogrammable PAL
b) ROM PAL
c) Very large PAL
d) Reprogrammable PAL
Ans: d) Reprogrammable PAL
Programmable logic array is a______.
a)Two Level OR-OR Device
b)Two Level of AND-AND Device
c) Two Level OR-AND Device
d) Two Level AND-OR Device
Ans: d) Two Level AND-OR Device
OLMC stands for________.
a) Output logic macro cells
b) Output logic micro cells
c) Output level macro cells
c) Output level micro cells
Ans: a) Output logic macro cells
The complex programmable logic device contains several PLD blocks and __________
a) A language compiler
b)AND/OR arrays
c)Global interconnection matrix
d) Field-programmable switches
c)Global interconnection matrix
Ans: a) Output logic macro cells
FPGA architecture are based on a type of memory called a _________.
Understanding
a) Look up table (LUT)
b)Lookdown table (LDT)
c) EPROM
d) PROM
Ans: a) Look up table (LUT)
Significance of the SOC control line, in the analog to digital converter is_________.
a) Start of concept
b) Significance of conversion
c) Start of conversion
d) None of the above
Ans: c) Start of conversion
In ADCs, it is possible to reduce the quantization error by _______the number of bits.
a) Increasing
b)Decreasing
c)Maintaining consistency in
d) All of the above
Ans: a) Increasing
Application of dual slope converter is______.
a)Thermocouple
b)Digital panel meter
c) Analog oscilloscope
d) DAC
Ans: a) Digital panel meter
Identify an ADC in which a DAC is used.
a) Successive approximation register type ADC
b) Single slope ADC
c)Dual slope ADC
d)Flash type ADC
Ans: a) ) Successive approximation register type ADC
A SAR ADC consists of the following:
Understanding
a) Priority encoder
b) SAR and comparator
c)Integrator
d) Voltage divider network
Ans: b) SAR and comparator
The SAR ADC is the commonly used architecture for _________.
Application
a)DAC
b)Analog meters
c) Multiplexers
d) Data acquisition systems
Ans: d) Data acquisition systems
The time taken for the output of DAC to settle within a specified band of its final value is referred as______.
Recall/ Remembering
a) Resolution
b)Accuracy
c) Settling time
d) Linearity
Ans: c) Settling time
The resolution of 8 bit DAC will be_______.
Application
a) 562
b)625
c)256
d) 265
Ans: c) 256
The digital data input in DAC IC 0808 is_____ .
Recall/ Remembering
a)8 bit parallel
b)16 bit parallel
c) 7 bit parallel
d) Series
Ans: a) 8 bit parallel
The difference between the analog signal and the closest available digital value at each sampling instant from the A/D converter is called as______.
Recall/ Remembering
a) Quantization error
b) Sampling error
c)Monolithic DAC
d)Hybrid DAC
Ans: a) Quantization error
The resolution of a 10-bit AD converter for an input range of 10v is______.
Application
a) 97.7m v
b) 9.77mV
c)0.977mV
d) 977mV
Ans: b) 9.77mv
The maximum deviation between actual and ideal converter output after the removal of error is called as ________.
Understanding
a)Absolute accuracy
b)Relative accuracy
c) Linearity
d) Resolution
Ans: b) Relative accuracy
In the design of all microprocessor-based systems, semiconductor memories are used as primary storage for _______.
Recall/ Remembering
a) Only code
b)Only data
c) code and data
d)None of the above
Ans: c) code and data
A disk and tape are types of________.
Understanding
a) Sequential memory
b)RAM
c)ROM
d) Flip-flop
Ans: a) Sequential memory
Semiconductor memories are sometimes referred to as _________.
Recall/ Remembering
a)Secondary memory
b)Primary memory.
c) External memory
d) Extended memory
Ans: b)Primary memory.
The speed of the memory at which it accesses the data is also referred as _____.
Recall/ Remembering
a) Access time
b)Settling time
c)Conversion time
d)Speed time
Ans: a) Access time
How many storage locations are available when a memory device has twelve address lines?
Application
a) 144
b) 4096
c)512
d) 2048
Ans: b) 4096
The basic operations performed by a memory chip are
Understanding
a)Read
b)Write
c) Analyse
d) Read and Write
Ans: d)Read and Write
The two kinds of main memory are_______.
Recall/ Remembering
a) Primary and Secondary
b)Cache 1 and Cache2
c) RAM and ROM
d)None of the above
Ans: c)RAM and ROM
A RAM is an abbreviation for ______________.
Understanding
a) Random Access Memory
b)Non-volatile memory
c)Read only memory
d) Flip-flop
Ans: a) Random Access Memory
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