1) What does the last instruction of each subroutine that transfer the control to the instruction in the calling program with temporary address storage, called as?
a. Jump to subroutine
b. Branch to subroutine
c. Return from subroutine
d. Call subroutine
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2) The transfer of branch information to the microprocessor by an interrupting source through the data bus is called as ________.
a. Vectored Interrupt
b. Non-vectored Interrupt
c. Priority Interrupt
d. None of the above
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3) Which program controllable flipflop is in-built in microprocessor specifically used to set or clear the program instructions?
a. IEN flip-flop
b. IDN flipflop
c. SR flipflop
d. D flipflop
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4) Which circuit implements the hardware priority interrupt unit function to determine the highest priority of simultaneously arriving various input signals?
a. Priority Decoder
b. Priority Encoder
c. Priority Selector
d. Priority Preceeder
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5) Which interface allows the cardinal provision of communicating with one particular input-output device in addition to the programming capability for operating with specific device?
a. Parallel Peripheral Interface
b. Serial Communication Interface
c. Special Dedicated Interface
d. Direct Memory Access Interface
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6) Which lines are supposed to control or handle the transfer operation between two devices in asynchronous mode by apprising the status of transfer using common bus?
a. Control Lines
b. Data Lines
c. Transfer Lines
d. Handshake Lines
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7) What registers are significantly incremented and decremented respectively for the transmission of each byte by Direct Memory Access (DMA)?
a. Address Register & Byte Count Register
b. Control Register & Byte Count Register
c. Transmitter Register & Byte Count Register
d. Status- Register & Byte Count Register
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8) Which instruction indicates the transfer of program sequence to the address specified by 16 bit value if Z flag =0?
a. CZ Address
b. CNZ Address
c. CPE Address
d. CPO Address
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9) Which instruction is used to set the interrupt by maintaining the serial output bit in set mode of operation?
a. SIM
b. STC
c. SBI Data
d. SUI Data
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10) Which instruction set performs the dual operation of reading the status of interrupts as well as serial input data bit?
a. RNZ
b. RZ
c. RPO
d. RIM
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11) Which type of branch instructions jump to a novel location from the continuation of previous program upon its execution?
a. Data Transfer Instructions
b. Logic Instructions
c. Bit-oriented Instructions
d. Un-conditional Instructions
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12) Which bit of micro-controller handles or controls the relationship between clock and data in serial mode of operation in coordination with CPOL?
a. CPHA
b. DORD
c. MSTR
d. SPE
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13) Which phenomenon occurs when WCOL bit operates in normal mode if the SPDR register writes in premature form without affecting the operation during data transfer?
a. Read Collision
b. Bit Collision
c. Write Collision
d. Data Collision
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14) Which can be treated as a major shortcoming/s of the microprocessor?
a. Large Board size than micro-controller
b. Utility of different peripherals for several project assortments
c. Notification remembrance of quirks for each component
d. All of the above
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15) The most arduous form of disadvantage for the micro-controllers include______.
a. Awareness regarding the performance of on-board peripherals
b. High cost-effectivity
c. Difficult programming level
d. None of the above
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Answer
Explanation
Related Ques
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ANSWER: Awareness regarding the performance of on-board peripherals
Explanation:
No explanation is available for this question!
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16) Why are micro-controllers more advantageous & preferred than microprocessors?
a. Due to flexible programming nature
b. Due to rigidness in programming level
c. Due to faster speed of execution by saving human - labour effort
d. All of the above
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17) Absorption and transfer of heat in surrounding air for stud-mounted diodes occur by the mechanisms of ____________
a. Conduction & Convection
b. Convection & Radiation
c. Conduction & Radiation
d. Conduction, Convection & Radiation
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Answer
Explanation
Related Ques
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ANSWER: Convection & Radiation
Explanation:
Generally, soldering is the process adopted for mounting the low and high medium current diodes. These diodes generate very less quantity of heat. But, stud- mounted diodes produce maximum amount of heat for which air convection is insufficient.
Therefore, necessity of heat sink arises which plays a cardinal role in absorbing and then transferring it to the surrounding medium by means of convection as well as radiation due to availability of maximum surface area.
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18) The value of leakage current is mainly dependent on
a. Temperature
b. Degree of doping
c. Physical size of junction
d. All of the above
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Answer
Explanation
Related Ques
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ANSWER: All of the above
Explanation:
Leakage current is generated when reverse current rises to its maximum value in reverse-biased configuration of PN junction diode. This leakage current is independent of the applied reverse voltage.
Leakage current is affected to greater extent by the parameters of temperature, doping level and the physical size of junction. Sharp and sudden rise in leakage current can be observed in reverse bias characteristics due to excess of breakdown voltage, where the curve represents zero resistance at this point.
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19) Which resistance is offered by the diode in forward direction above the barrier voltage?
a. Bulk Resistance
b. Junction Resistance
c. Dynamic Resistance
d. Reverse DC Resistance
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Answer
Explanation
Related Ques
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ANSWER: Bulk Resistance
Explanation:
Bulk resistance is the sum of resistance values of P & N type semiconductor materials. Because of its minute value, bulk resistance can also be expressed as,
rB = ( VF - VB ) / IF
When the value of current is very large, the diode offers the resistance above the barrier voltage in forward direction.
On the contrary, junction resistance solely depends on the magnitude of forward DC current & hence ultimately known as 'Variable Resistance'. Dynamic resistance is almost equal to junction resistance for negligible values of rB and IF. Apart from these, reverse DC resistance is offered in case of reverse voltage corresponding to reverse current absolutely in reverse direction.
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20) Compute the current in
(a) an ideal diode and
(b) power consumed by 8 ohm resistor of the below drawn circuit.
a. 2A & 24W
b. 2A & 32W
c. 2A & 12W
d. 2A & 8W
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