ARM Cortex Microcontroller Real World Interfacing - Electronic Engineering (MCQ) questions & answers

1)   In ISA, Timer 0 is also regarded as ______

a. System Timer
b. Refresh Timer
c. Speaker Timer
d. All of the above
Answer  Explanation 

ANSWER: System Timer

Explanation:
No explanation is available for this question!
2)   In ISA, what is/are the application/s of Timer2 which acts as a speaker timer?

a. Date & time maintenance in RAM
b. General purpose timer
c. Diagnostic purpose
d. All of the above
Answer  Explanation 

ANSWER: Diagnostic purpose

Explanation:
No explanation is available for this question!
3)   Which category of function code represents the currently used codes by some companies especially for legacy products?

a. Public
b. User-defined
c. Reserved
d. Exceptions
Answer  Explanation 

ANSWER: Reserved

Explanation:
No explanation is available for this question!
4)   In Modbus Protocol, which codes are included in Request PDU?

a. Function code, Response data
b. Function code, Function data
c. Error code, Exception code
d. All of the above
Answer  Explanation 

ANSWER: Function code, Function data

Explanation:
No explanation is available for this question!
5)   What is the value of maximum data rate in RS 232 standard?

a. 20 kb/s
b. 40 kb/s
c. 80 kb/s
d. 100 kb/s
Answer  Explanation 

ANSWER: 20 kb/s

Explanation:
No explanation is available for this question!
6)   Which mode of operation is exhibited by RS-485 standard?

a. Single ended
b. Differential
c. Both a and b
d. None of the above
Answer  Explanation 

ANSWER: Differential

Explanation:
No explanation is available for this question!
7)   In SPI bus, which signal line carries data from master to slave device & hence regarded as Slave Input/Slave Data In (SI/SDI)?

a. Master Out Slave In (MOSI)
b. Master In Slave Out (MISO)
c. Serial Clock (SCLK)
d. Slave Select (SS)
Answer  Explanation 

ANSWER: Master Out Slave In (MOSI)

Explanation:
No explanation is available for this question!
8)   In RS232 DB-9 connector standard, which signal is sent by DTE by alerting the DCE for the data communication purpose?

a. DTR
b. DSR
c. RTS
d. DCD
Answer  Explanation 

ANSWER: DTR

Explanation:
No explanation is available for this question!
9)   Which among the following is/are integrated by OTG controller in order to implement OTG dual-role device functionality?

a. Host Controller
b. Device Controller
c. Master-only I2C bus interface
d. All of the above
Answer  Explanation 

ANSWER: All of the above

Explanation:
No explanation is available for this question!
10)   Which type of handshake packet indicates that the device is incapable of accepting data as it is supposed to be busy with some another task?

a. ACK
b. NAK
c. STALL
d. None of the above
Answer  Explanation 

ANSWER: NAK

Explanation:
No explanation is available for this question!

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