Multiple Choice Questions and Answers on Process Control and Instrumentation 1. The temperature of tempering oil baths maintained at 400°C during heat treatment of steel is measured by a/an __________ thermocouple. a) chromel-alumel b) iron-constantan c) platinum-platinum/rhodium d) none of these. Answer: iron-constantan 2. Flapper nozzle is used in a/an __________ controller. a) electronic b) hydraulic c) pneumatic d) none of these Answer: pneumatic 3. The __________ of a vapor pressure thermometer is a functioning element. a) pointer b) bourdon tube c) bulb d) none of these Answer: pointer 4. A negative gain margin expressed in decibels means a/an __________ system. a) stable b) unstable c) critically damped d) none of these Answer: unstable 5. Temperature measuring instruments are standardised mostly with __________ points of pure substances. a) melting b) boiling c) both (a) & (b) c) neither (a) nor (b) Answer: both (a) & (b) 6. Response of a system to a sinusoidal input

Multiple Choice Questions & Answers on 8051 I/O Port Programming and Addressing Modes 1. Auto reload mode is allowed in which mode of the timer? a) Mode 0 b) Mode 1 c) Mode 2 d) Mode 3 Answer: Mode 2 2. 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: P3.4 3. 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: 2.97 msec 4. In the instruction “MOV TH1,#-3”, what is the value that is being loaded in the TH1 register? a) 0xFCH b) 0xFBH c) 0xFDH d) 0xFEH Answer: 0xFDH 5. TF1, TR1, TF0, TR0 bits are of which register? a) TMOD b) SCON c) TCON d) SMOD Answer: TCON 6. 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: 1FFFH,FFFFH,00FFH. 7. What is the clock source for the timers? a) some external

8051 microcontroller MCQ 1. ANL instruction is used _______ a) to AND the contents of the two registers b) to mask the status of the bits c) all of the mentioned d) none of the mentioned Answer: all of the mentioned 2. CJNE instruction makes _______ a) the pointer to jump if the values of the destination and the source address are equal b) sets CY=1, if the contents of the destination register are greater then that of the source register c) sets CY=0, if the contents of the destination register are smaller then that of the source register d) none of the mentioned Answer: none of the mentioned 3. XRL, ORL, ANL commands have _______ a) accumulator as the destination address and any register, memory or any immediate data as the source address b) accumulator as the destination address and any immediate data as the source address c) any register as the destination address and accumulator, memory or any immediate data as the source address d) any register as the destination address and any i

Multiple Choice Questions & Answers on 8051 Interfacing 1. An electronic device which converts physical quantity or energy from one form to another is called ______ a) Sensor b) Transistor c) Transducer d) Thyristor Answer: Transducer 2. A thermistor is a __________ a) sensor b) adc c) transducer d) micro controller Answer: transducer 3. DS12887 is a ____________ a) Timer IC b) Serial communication IC c) RTC IC d) Motor Answer: RTC IC 4. DS12887 has _____ amount of RAM. a) 14 bytes b) 114 bytes c) 128 bytes d) 64 bytes Answer: 128 bytes 5. The 8255 is a ______ chip. a) Input/Output b) Analog to Digital c) Digital to analog d) None of the mentioned Answer: Input/Output 6. DS12887 has _____ amount of RAM for general purpose applications. a) 9 bytes b) 114 bytes c) 128 bytes d) 14 bytes Answer: 114 bytes 7. How many pins of the 8255 can be used as the I/O ports? a) 8 b) 16 c) 24 d) 32 Answer: 24 8. LM35 has how many pins? a) 2 b) 1 c) 3 d) 4 Answer: 3 9. Find the control word for PA =

Types of Heat Exchanger Questions & Answers 1. Heat exchanger effectiveness is a) <1 b) =1 c) >1 d) None of the mentioned Answer: <1  2. In a cross flow heat exchanger, the angle between hot and cold fluids is a) 900 b) 1800 c) 800 d) None of the mentioned Answer: 900 3. In a counter flow heat exchanger, the angle between hot and cold fluids is a) 900 b) 1800 c) 800 d) None of the mentioned Answer: 1800 4. In condensers/boilers, heat capacity ratio is a) Infinity b) Zero c) 1 d) None of the mentioned Answer: Zero 5. Rate of heat transfer by condensing fluid is a) m.cp Δt b) m. LH c) m.Δt d) None of the mentioned Answer: m. LH 6. In case of a 1:1 heat exchanger, use a) LMTD b) NTU c) LMTD or NTU d) None of the mentioned Answer: LMTD or NTU 7. NTU in a heat exchanger is a) UA/C b) C min/UA c) UA/C max d) None of the mentioned Answer: None of the mentioned 8. ‘C’ heat capacity ratio in a heat exchanger be a) =1 b)  > 1 c) >4 d) None of the mentioned Answer: None of the

Multiple Choice Questions & Answers on 8051 Microcontroller I/O Port Programming and Addressing Modes 1. Which operator is the most important while assigning any instruction as register indirect instruction? a) $ b) # c) @ d) & Answer: @ 2. Which of the following comes under the indexed addressing mode? a) MOVX A, @DPTR b) MOVC @A+DPTR,A c) MOV A,R0 d) MOV @R0,A Answer: MOVC @A+DPTR,A 3. Which out of the four ports of 8051 needs a pull-up resistor for using it is as an input or an output port? a) PORT 0 b) PORT 1 c) PORT 2 d) PORT 3 Answer: PORT 0 4. Which of the ports act as the 16 bit address lines for transferring data through it? a) PORT 0 and PORT 1 b) PORT 1 and PORT 2 c) PORT 0 and PORT 2 d) PORT 1 and PORT 3 Answer: PORT 0 and PORT 2 5. Which instruction is used to check the status of a single bit? a) MOV A,P0 b) ADD A,#05H c) JNB PO.0, label d) CLR P0.05H Answer: JNB PO.0, label 6. Which of the following registers are not bit addressable? a) SCON b) PCON c) A d) PSW An

Multiple Choice Questions & Answers on 8051 Microcontroller Interrupt Programming 1. Which pin of the external hardware is said to exhibit INT0 interrupt? a) pin no 10 b) pin no 11 c) pin no 12 d) pin no 13 Answer: pin no 12 2. What are the contents of the IE register, when the interrupt of the memory location 0x00 is caused? a) 0xFFH b) 0x00H c) 0x10H d) 0xF0H Answer: 0x00H 3. Which of the following combination is the best to enable the external hardware interrupt 0 of the IE register (assuming initially all bits of the IE register are zero)? a) EX0=1 b) EA=1 c) any of the mentioned d) EX0=1 & EA=1 Answer: EX0=1 & EA=1. 4. Which bit of the IE register is used to enable TxD/RxD interrupt? a) IE.D5 b) IE.D2 c) IE.D3 d) IE.D4 Answer: IE.D4 5. What is the correct order of priority that is set after a controller gets reset? a) RI/TI > TF1 > TF0 > INT1 > INT0 b) RI/TI < TF1 < TF0 < INT1 < INT0 c) INT0 > TF0 > INT1 > TF1 > RI/TI d) INT0 < TF

Multiple Choice Questions & Answers on 8051 Microcontroller  Serial Port Communication 1. With what frequency UART operates( where f denoted the crystal frequency )? a) f/12 b) f/32 c) f/144 d) f/384 Answer: f/384 2. What is a null modem connection? a) no data transmission b) no MAX232 c) the RxD of one is the TxD for the other d) no serial communication Answer: the RxD of one is the TxD for the other 3. What should be done if we want to double the baud rate? a) change a bit of the TMOD register b) change a bit of the PCON register c) change a bit of the SCON register d) change a bit of the SBUF register Answer: change a bit of the PCON register 4. Which of the following signal control the flow of data? a) RTS b) DTR c) RTS & DTR d) None of the mentioned Answer: RTS 5. Which of the following best describes the use of framing in asynchronous means of communication? a) it binds the data properly b) it tells us about the start and stops of the data to be transmitted or received c)

Multiple Choice Questions & Answers on 8051 Microcontroller LCD and Keyboard Interfacing 1. The RS pin is _________ for an LCD. a) input b) output c) input & output d) none of the mentioned Answer: input 2. How many data lines are there in a 16*2 alphanumeric LCD? a) 16 b) 8 c) 1 d) 0 Answer: 8 3. In reading the columns of a matrix, if no key is pressed we should get all in binary notation a) 0 b) 1 c) F d) 7 Answer: 1 4. Which pin of the LCD is used for adjusting its contrast? a) pin no 1 b) pin no 2 c) pin no 3 d) pin no 4 Answer: pin no 3 5. How many rows and columns are present in a 16*2 alphanumeric LCD? a) rows=2, columns=32 b) rows=16, columns=2 c) rows=16, columns=16 d) rows=2, columns=16 Answer: rows=2, columns=16 6. Which command is used to select the 2 lines and 5*7 matrix of an LCD? a) 0x01 b) 0x06 c) 0x0e d) 0x38 Answer: 0x38 7. Which instruction is used to select the first row first column of an LCD? a) 0x08 b) 0x0c c) 0x80 d) 0xc0 Answer: 0x80 8. Which command of

Multiple Choice Questions & Answers on 8051Microcontroller ADC, DAC Interfacing 1. 8 input DAC has ________ a) 8 discrete voltage levels b) 64 discrete voltage levels c) 124 discrete voltage levels d) 256 discrete voltage levels Answer: 256 discrete voltage levels 2. What is the function of the WR pin? a) its active high input used to inform ADC0804 to the end of conversion b) its active low input used to inform ADC0804 to the end of conversion c) its active low input used to inform ADC0804 to the start of conversion d) its active high input used to inform ADC0804 to the start of conversion Answer: its active low input used to inform ADC0804 to the start of conversion 3. State which of the following statements are false? a) CLK IN pin used for External Clock Input or Internal Clock with external RC element b) INTR pin tells about the end of the conversion c) ADC0804 IC is an 8 bit parallel ADC in the family of the ADC0800 series d) None of the mentioned Answer: None of the mentio

Multiple Choice Questions & Answers on Key Enablers of Industrial IoT   1. SIGFOX radio link operates on _____________. a) Both licensed and unlicensed ISM band b) Only licensed ISM band c) Only unlicensed ISM band d) None of the above Answer: Only unlicensed ISM band 2. Coordinator ZigBee devices act as the bridge between ______. a) Different networks b) Different edge devices c) Different fog devices d) All of the above Answer: Different networks 3. The architectural layers of SmartSantander include __________. a) Accessible, Authorization, and Accounting subsystem b) Authentication, Authorization, and Accounting subsystem c) Authentication, Authorization, and Accomodation subsystem d) None of the above Answer: Authentication, Authorization, and Accounting subsystem 4. Smart warehousing uses ____________-based framework. a) Both RIFT and RIST b) Only RIFT c) Only RIST d) Only REST Answer: Only REST 5. A typical industrial control system includes _____________ major components.

Multiple Choice Questions & Answers on Addressing Reliability 1. SLA stands for ____________ a) Service Level Agreement b) Security Level Agreement c) System Local Area d) Service Local Area Answer: Service Level Agreement 2. With physical security, the stakes are incredibly ________ a) Very high b) Low c) Very low d) High Answer: High. 3. The most likely culprit is ________ a) Things b) Network c) Device d) Internet connectivity Answer: Internet connectivity 4. A provider which produces 99 percent uptime ________ a) Security issues b) Network Issues c) Programming issue d) Memory issue Answer: Network Issues 5. There are efficiency gains from ________ all sorts of equipment. a) Implementation b) Analogous c) Evolution d) Digitization Answer: Digitization 6. The availability of ________ is the cloud services provider who will host video and data for end users. a) Devices b) Memory c) Security system d) Objects Answer: Security system 7. Communication between ________ and ________ i

Multiple Choice Questions & Answers on IOT Handling Actuator and Sensor Request 1. Enabled customization endpoint will be sensitive only during ________ a) True and false cases b) False cases only c) Either True or false cases d) True cases only Answer: True cases only 2. Enabled customization endpoint will be enabled only during __________ a) True cases only b) False cases only c) Either True or false cases d) True and false cases Answer: True cases only 3. An HTTP server manages ____________ a) Websites b) Devices c) Resources d) Sensors Answer: Resources 4. HelloWeb is an example of ____________ server. a) HTTP b) MQTP c) SMTP d) CoAP Answer: HTTP 5. A resource that contains an actual value is called as ________ a) Potential variable b) Measured variable c) Resource variable d) Physical variable Answer: Measured variable 6. When a client makes a GET request for /voltage/actual, the request is passed to ________ a) MeasuredVariable b) HandleRequest c) Measured Variable’s HandleRe

Multiple Choice Questions & Answers on Multithreading 1. Multithreading is a mechanism for splitting up a program into several parallel activities called _________ a) Methods b) Objects c) Classes d) Threads Answer: Classes 2. Multithreading on a single processor is possible with the help of _________ a) Threader b) Scheduler c) Method d) Divider Answer: Scheduler 3. An instance of class Buffer provides a threadsafe way of communication between ________ a) Actors b) Objects c) Locking d) Buffer Answer: Objects 4. Scheduler switch threads in ________ a) Multilevel queue scheduling b) Priority Scheduling c) Round robin fashion d) Multilevel feedback queue scheduling Answer: Round robin fashion 5. In ______ an object of type Thread in the namespace System.Threading represents and controls one thread. a) . PY b) .SAP c) .NET d) .EXE Answer: .NET 6. The method will be executed once the thread’s ______ method is called. a) EventBegin b) EventStart c) Begin d) Start Answer: Start 7. _____

Multiple Choice Questions & Answers on IOT Resource Management 1. Resource management includes ___________ a) IoT Devices b) IoT Cloud c) IoT Networks d) IoT Web Answer: IoT Cloud 2. Managing of resources can be done by implementing ________ a) Protocols b) Algorithms c) Networks d) Protocols and algorithms Answer: Protocols and algorithms 3. The object of IoT will be empowered by ___________ a) Network b) Cloud c) Devices d) Connectivity Answer: Devices 4. This section is to solicit the efforts and ongoing research work in the domain of _______ a) Information Management b) Resource Management c) Industrial Management d) Network Management Answer: Resource Management 5. The embedded devices will form _______ network. a) ATM b) Ethernet c) FDDI d) Ad-hoc Answer: Ad-hoc 6. Resource management will elaborate the key aspects of _________ a) Industrial management b) Energy management c) Network management d) Information management Answer: Network management 7. In _________ the embedded

Multiple Choice Questions & Answers on IOT Services Lifecycle 1. ___________ Service is responsible for establishing the requested service with in the cloud database. a) Suspend b) Resource Discovery c) Unregister d) Register Answer: Register 2. ________ service allows the enablement of an unregistered service. a) Enable from suspension b) Enable c) Update d) Registered service status Answer: Enable 3. __________ performs two functions toward the delivery of the services. a) Global Scheduler b) Local Scheduler c) Device Scheduler d) IoT Scheduler Answer: Global Scheduler 4. _________ service is deactivated and therefore its operation is ceased. a) Register b) Resource Discovery c) Unregister d) Suspend Answer: Suspend 5. ___________ manages the metadata of the IoT services. a) Power b) Controller c) Scheduler d) Package Answer: Scheduler 6. _________ service enables the previously suspended services. a) Enable from suspension b) Enable c) Update d) Registered service status Answer:

Multiple Choice Questions & Answers on Communication with IOT Devices 1. Bluetooth will transmit the data over the frequency band _________ a) 2.4 to 2.7 GHz b) 2.4 to 3 GHz c) 2.4 to 2.485 GHz d) 2.4 to 2.6 GHz Answer: 2.4 to 2.485 GHz 2. Thread would be able to support __________ devices. a) 256 Devices b) 300 Devices c) 125 Devices d) 250 Devices Answer: 250 Devices 3. BAN stands for ________ a) Body Area Network b) Brain Area Network c) Body Android Network d) Brain Android Network Answer: Body Area Network 4. NFC stands for ________ a) Near Fast Communication b) Near Field Communication c) Near Field Customer d) Near Field Connection Answer: Near Field Communication 5. Management is set of _________ a) Technologies b) Processes c) Devices d) Technologies and Processes Answer: Technologies and Processes 6. AI is also named as __________ a) Context aware b) Personalized c) Adaptive d) Context aware, personalized, and adaptive Answer: Context aware, personalized, and adaptive 7.