Microprocessors and Microcontrollers: Unit V: (a) Microcontroller Applications : Two Marks Questions with Answers, University Questions with Answers (Long Answered Questions)
Two Marks Questions with Answers
Q.1
Why do we need opto-isolator circuit between microcontroller and the stepper motor
? AU : Dec.-11
Ans.
:
To isolate power circuit of stepper motor and control circuit opto-isolator is needed.
It physically separates control circuit ground and power circuit ground connections. Due to such connection, the
operation of control circuit is not high current spikes in the power circuit.
Q.2
How is pulse generated from microcontroller for stepper motor control AU : May-13
(Refer
section 17.4)
Q.3
State the principle of microcontroller based stepper motor control system AU :
Dec.-14
(Refer
section 17.4)
Q.4
How a keyboard matrix is formed in keyboard interface ? AU : May-16
(Refer
section 17.1.2)
University Questions with Answers (Long Answered Questions)
(Regulation
2008)
May.-11
Q.1
Explain the interfacing of keyboard/display with 8051 microcontroller.
(Refer
sections 17.1 and 17.2) [8]
Dec.-11
Q.2
Explain
with a program to rotate the stepper motor in both clockwise and anticlockwise
direction using 8051 microcontroller.
(Refer
section 17.4) [8]
Q.3
How
to interface a 7 segment display using 8051 microcontroller.
(Refer
section 17.2.2) [8]
Q.4
How
8051 is used in washing machine control? (Refer section
17.5)
[8]
Q.5
How
do you interface a 4 x 4 matrix keyboard using 8051 microcontroller? (Refer
section 17.1.4) [8]
May-12
Q.6
Explain
the stepper motor control using 8051. (Refer section 17.4) [8]
Q.7
Write
a program to generate pulses to derive and for continuous operation of a
stepper motor. (Refer section 17.4) [8]
Dec.-12
Q.8
Draw
the circuit diagram to interface an LCD display with 8051 microcontroller and
explain how to display a character using LCD display.
(Refer section 17.2.3) [8]
Q.9
How
to interface a 4 × 4 matrix keyboard using 8051 microcontroller and explain how
to identify the key press. (Refer section
17.1.4) [8]
Q.10
Explain how to control the speed of the stepper motor using 8051
microcontrollers, with algorithmic steps. (Refer section
17.4) [8]
May-13
Q.11
Describe with a neat diagram the stepper motor control using microcontroller. (Refer
section 17.4) [16]
May-14
w
Q.12
Explain the port operation in 8051 microcontroller. (Refer
section 17.1) [16]
(Regulation
2013)
Dec.-15
Q.13
Explain how to control a stepper motor using 8051 microcontroller with a neat
interfacing diagram and assembly program. (Refer section
17.4) [16]
May-16
Q.14
Explain the vectored interrupts in 8051 microcontroller. (Refer
section 17.7.2) [8]
Dec.-16
Q.15
Explain the interfacing of four digit 7 segment display to 8051 and its
program. (Refer section 17.2.2) [16]
May-17
Q.16
Explain the stepper motor control using 8051 and write an assembly language
program for running the stepper motor in clockwise direction.
(Refer
section 17.4) [16]
Dec.-18
Q.17
Design
a system using 8085 or 8051 to blink four LEDs. (Refer
section 17.2.1) [15]
Q.18
Design a stepper motor control system using 8051 microcontroller. (Refer
section 17.4) [15]
(Regulation
2017)
Dec.-19
Q.19
Show how to interface a stepper motor to 8051 microcontroller. Also, write an
assembly language program to demonstrate control of direction and speed of
stepper motor rotation. (Refer section 17.4) [16]
Q.20 Show how to interface a 8×8 matrix keyboard to the 8051 microcontroller and discuss in detail the various stages for detection and identification of key activation by a microcontroller. Also, write an assembly language program to detect and identify the processed key. (Refer section 17.1.2) [16]
Microprocessors and Microcontrollers: Unit V: (a) Microcontroller Applications : Tag: : - Two Marks Questions with Answers