MCQOPTIONS
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MCQOPTIONS
This section includes 19 Mcqs, each offering curated multiple-choice questions to sharpen your Avr Microcontroller knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
IN_THE_INSTRUCTION_‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖ‚À´MOV_TH1,-3‚ÄÖ√Ñ√∂‚ÀÖ√Ë‚ÀÖŒÄ,_WHAT_IS_THE_VALUE_THAT_IS_BEING_LOADED_IN_THE_TH1_REGISTER??$# |
| A. | 0xFCH |
| B. | 0xFBH |
| C. | 0xFDH |
| D. | 0xFEH |
| Answer» B. 0xFBH | |
| 2. |
WHICH_PIN_IS_USED_FOR_THE_INPUT_CLOCK_OF_THE_COUNTER0??$ |
| A. | PORTB.0 |
| B. | PORTB.1 |
| C. | PORTB.2 |
| D. | PORTB.3 |
| Answer» B. PORTB.1 | |
| 3. |
TF1, TR1, TF0, TR0 bits are of which register?$ |
| A. | TMOD |
| B. | SCON |
| C. | TCON |
| D. | SMOD |
| Answer» D. SMOD | |
| 4. |
Which_resource_provides_the_clock_pulse_to_AVR_timers_if_CS02-00=6?$ |
| A. | internal clock of the AVR |
| B. | external clock of the AVR |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» C. none of the mentioned | |
| 5. |
If Timer 0 is to be used as a counter, then at what particular pin clock pulse need to be applied? |
| A. | P3.3 |
| B. | P3.4 |
| C. | P3.5 |
| D. | P3.6 |
| Answer» C. P3.5 | |
| 6. |
We can count the pulses on the positive or the negative edge triggered pulse of the clock? |
| A. | true |
| B. | false |
| C. | can’t be determined |
| D. | depends on the circumstances |
| Answer» B. false | |
| 7. |
What steps are followed when we need to turn on any timer? |
| A. | load the count, start the timer, keep monitoring it, stop the timer |
| B. | load the TMOD register, load the count, start the timer, keep monitoring it, stop the timer |
| C. | load the TMOD register, start the timer, load the count, keep monitoring it, stop the timer |
| D. | none of the mentioned |
| Answer» C. load the TMOD register, start the timer, load the count, keep monitoring it, stop the timer | |
| 8. |
What is the difference in the operation of a normal and a CTC mode of a timer? |
| A. | in CTC mode PWM is used |
| B. | here serial timer is monitored |
| C. | her the contents are compared with the OCR register, if value becomes equal then only the timer is cleared |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 9. |
Find out the roll over value for the timer in Mode 0, Mode 1 and Mode 2? |
| A. | 00FFH,0FFFH,FFFFH |
| B. | 1FFFH,0FFFH,FFFFH |
| C. | 1FFFH,FFFFH,00FFH |
| D. | 1FFFH,00FFH,FFFFH |
| Answer» D. 1FFFH,00FFH,FFFFH | |
| 10. |
Which of the following will generate the maximum time delay? |
| A. | f/2 |
| B. | f/4 |
| C. | f/16 |
| D. | f/32 |
| Answer» E. | |
| 11. |
Auto reload mode is allowed in which mode of the timer? |
| A. | Mode 0 |
| B. | Mode 1 |
| C. | Mode 2 |
| D. | Mode 3 |
| Answer» D. Mode 3 | |
| 12. |
Which of the timer can operate in the 16 bit condition? |
| A. | timer0 |
| B. | timer1 |
| C. | timer2 |
| D. | all of the mentioned |
| Answer» C. timer2 | |
| 13. |
What is the maximum delay that can be generated with the crystal frequency of 22MHz? |
| A. | 2978.9 sec |
| B. | 0.011 msec |
| C. | 11.63 sec |
| D. | 2.97 msec |
| Answer» E. | |
| 14. |
Timer 0 can act as a counter ____________ |
| A. | if the CS02-CS00 are 110 or 111 |
| B. | if the FOC0 bit is set to 110 |
| C. | none of the mentioned |
| D. | all of the mentioned |
| Answer» B. if the FOC0 bit is set to 110 | |
| 15. |
What is the function of the TMOD register? |
| A. | TMOD register is used to set different timer’s or counter’s to their appropriate modes |
| B. | TMOD register is used to load the count of the timer |
| C. | Is the destination or the final register where the result is obtained after the operation of the timer |
| D. | Is used to interrupt the timer |
| Answer» B. TMOD register is used to load the count of the timer | |
| 16. |
What modes are generally used in the operation of the timer0? |
| A. | Normal mode |
| B. | CTC mode |
| C. | PWM mode |
| D. | All of the mentioned |
| Answer» E. | |
| 17. |
What is the frequency of the clock that is being used as the clock source for the timer? |
| A. | some externally applied frequency f’ |
| B. | controller’s crystal frequency f |
| C. | controller’s crystal frequency /12 |
| D. | externally applied frequency/12 |
| Answer» D. externally applied frequency/12 | |
| 18. |
What is the use of the prescalar in the operation of the timer? |
| A. | for fast calculations |
| B. | for increasing the time delay given by the timer by decreasing its frequency of operation |
| C. | for removing the concept the reloading of count |
| D. | for easy counter operations |
| Answer» C. for removing the concept the reloading of count | |
| 19. |
In AVR, which of the following registers are not used for programming timers? |
| A. | TCNT |
| B. | TCON |
| C. | TIFR |
| D. | None of the mentioned |
| Answer» C. TIFR | |