IOT Questions and Answers 1.QoS guarantees in WSNs include a) Offering guarantees in terms of bandwidth, delay, jitter b) Offering guarantees in terms of packet loss probability. c) Offering guarantees in terms of Limited bandwidth, unpredictable changes in RF channel characteristics. d) All of these Answer: All of these 2. The WSN nodes are prone to a) Malicious attacks b) Eavesdropping c) Interference d) All of these Answer: All of these 3. With respect to WSN coverage problems, the OGDC algorithm is an acronym for a) Optimal Geographic Density Control b) Optimal Geographic Distance Control c) Optimal Geographic Distance Coverage d) Optimal geographic Density Coverage Answer: Optimal Geographic Density Control 4. A crossing with respect to WSN coverage is _ if it is in the interior region of at least one node’s coverage disk. a) Partially covered b) Covered c) Not covered d) Isolated Answer: Covered 5. A PIR Sensor stands for a) Proximity Infra-Red b) Passive Infra-Red c) Picture Inf...

IOT Objectives Types Questions And Answers 1. The main function of the IoT Gateway can be summarized as a) Forwarding packets between LAN and WAN on the IP layer. b) Performs application layer functions between IoT nodes and other entities. c) Enables local, short-range communication between IoT devices. d) All of these Answer: Forwarding packets between LAN and WAN on the IP layer. 2. Scalability of IoT means a) Expandable/reducible in terms of scale or size. b) Measurable c) Increasing/decreasing monetary costs. d) All of these. Answer: All of these 3.Which one of these is the most important factor to be considered in an IoT implementation: a) Scalability b) Power efficiency c) Efficient and scalable addressing schemes d) All of these Answer: All of these 4.Which statement is NOT TRUE a) IoT WAN connects various network segments. b) IoT WAN is geographically wide. c) IoT WAN is organizationally wide. d) None of these. Answer: None of these. 5.Which of these statements regarding senso...

Brief the different stages of SDLC Stages Of SDLC (Software Development Life Cycle) Project Planning Gathering Requirements & Analysis Design Coding or Implementation Testing Deployment Maintenance Stage 1: Project Planning The first stage of SDLC is all about “What do we want?” Project planning is a vital role in the software delivery lifecycle since this is the part where the team estimates the cost and defines the requirements of the new software. Stage 2: Gathering Requirements & Analysis The second step of SDLC is gathering maximum information from the client requirements for the product. Discuss each detail and specification of the product with the customer. The development team will then analyze the requirements keeping the design and code of the software in mind. Further, investigating the validity and possibility of incorporating these requirements into the software system. The main goal of this stage is that everyone understands even the minute detail of the requireme...

  DCS in Thermal Power Plant Multiple Choice Questions and Answers 1. DCS in Thermal power An automated power plant uses a) Programmable Logic Controller (PLC) b) Distributed control system (DCS) c) PLC or DCS d) none of the mentioned Answer: PLC or DCS 2. Supervisory Control And Data Acquisition (SCADA) system in a power plant monitors and controls a) Temperatures, speeds of pumps and motors b) Open and close valves. c) Both (a) & (b) d) none of the mentioned Answer: Both (a) & (b) 3. A _________ is the heart of a thermal power plant's instrumentation and control systems.  a) Distributed control system b) Discontinuous controller c) Continuous Controller d) none of the mentioned Answer: Distributed control system 4. The common communication protocols used in DCS include a) Ethernet b) HMI c) Device Net d) Control net Answer: HMI 5. When exchanging digital signals between two different control system then (e.g. DCS DO is connected to PLC DI) a) PLC Side input shall be ...

  Hydraulic Speed Responsive Governor Multiple Choice Questions And Answers 1. In hydraulic governors speed measuring device is connected to ________ a) Piston b) Power shaft c) Pilot valve d) None of the mentioned Answer: Pilot valve 2. Hydraulic governors have ________ adjustability to control. a) rich b) poor c) medium d) none of the mentioned Answer: poor 3. For sliding of pilot valve it requires ______ force and it is generated from piston. a) large b) small c) medium d) none of the mentioned Answer: small 4. _____________ is the standard hydraulic governor used in prime movers. a) Dash type isochronous governor b) Drop governor c) Dash type isochronous & Drop governor d) None of the mentioned Answer: Dash type isochronous governor 5. Hydraulic governors are ________ sensitive when compared to mechanical governors. a) less b) more c) equal d) none of the mentioned Answer: more 6. Dash type isochronous governor gives _________________ control. a) Proportional b) Integration...

Power Plant Turbine Objectives Questions And Answers Gas Turbine-Steam Power Plant Multiple Choice Questions And Answers 1. What part or % of power developed is utilised for driving the compressor? a) 65 % b) 70 % c) 55 % d) 80 % Answer: 65 % 2. The heating value of gaseous fuels is about _____________ a) 500 kJ/litre b) 30 kJ/litre c) 100 kJ/litre d) 10 kJ/litre Answer: 30 kJ/litre 3. In the ____________ heat transfer takes place between the exhaust gases and cool air. a) Intercooler b) Re-heater c) Regenerator d) Compressor Answer: Regenerator 4. The efficiency of multistage compressor is _____ than a single stage. a) lower b) higher c) equal to d) all of the mentioned Answer: lower 5. The compressor has to be started _____________ a) Before starting the gas turbine b) After starting the gas turbine c) Simultaneously with starting of gas turbine d) At any time during the operation Answer: Before starting the gas turbine 6. Gas turbine is shut down by ____________ a) Turning off start...

Arduino Arduino is a prototype platform (open-source) based on an easy-to-use hardware and software. It consists of a circuit board, which can be programmed (referred to as a microcontroller) and ready-made software called Arduino IDE (Integrated Development Environment), which is used to write and upload the computer code to the physical board.  Arduino Uno is a microcontroller board based on 8-bit ATmega328P microcontroller. Along with ATmega328P, it consists other components such as crystal oscillator, serial communication, voltage regulator, etc. to support the microcontroller. Arduino Uno has 14 digital input/output pins (out of which 6 can be used as PWM outputs), 6 analog input pins, a USB connection, A Power barrel jack, an ICSP header and a reset button. The key features are Arduino boards are able to read analog or digital input signals from different sensors and turn it into an output such as activating a motor, turning LED on/off, connect to the cloud and many othe...

    Difference between HCV and LCV     HCV LCV Also known as higher heating value (HHV) or gross calorific value Also known as lower heating value (LHV) or net calorific value Byproducts are allowed to condense Byproducts are allowed to escape Amount of heat evolved when a unit weight (or volume in the case of gaseous fuels) of the fuel is completely burnt and the products of combustion cooled to the normal conditions (with water vapor condened as a result). Amount of heat evolved when a unit weight (or volume in the case of gaseous fuels) of the fuel is completely burnt and water vapor leaves with the combustion products without being condensed. Total energy released when products have cooled down to the room temperature and water has been condensed out. Energy released when products are hot. Some of the heat or energy in byproducts can be recovered through condensat...

  Heat of Combustion Objectives Types Questions and Answers    1. What is the heating value of 10 Kg of coal with heat of combustion 10 J/Kg? a) -10 J b) 10 J c) -100 J d) 100 J Answer: -100 J 2. What is the difference between lower heating value and higher heating value if the product has 2 moles of H2O and Enthalpy of vaporization is 40 J/mole at standard conditions? a) -40 J b) 40 J c) -80 J d) 80 J Answer: -80 J 3. What is the heating value of 2 Kg of coal with heat of combustion 15 J/Kg? a) -15 J b) 15 J c) -30 J d) 30 J Answer: -30 J 4. What is the heat of reaction for N2 + 3H2 -> 2NH3, if the heat of combustion of N2 = 5 J, H2 = 2 J, and NH3 = 15 J? a) -5 J b) 5 J c) -19 J d) 19 J Answer: -19 J 5. What is the heat of reaction if the heat of combustion of products is 40 J and heat of combustion of reactants is 25 J? a) 5 J b) 10 J c) 15 J d) -15 J Answer: -15 J 6. What is the heat of reaction if the heat of combustion of products is 25 J and heat of combustion of...

Heat of Combustion Multiple Choice Questions and Answers 1. Flue gas discharge velocity through chimney of a big thermal power plant may be around __________ m/sec. a) 0.5 b) 500 c) 10 d) 50 Answer: 10 2. Tar yield in the low temperature and high temperature carbonisation of dry coal may be respectively __________ percent. a) 10 & 3 b) 3 & 10 c) 15 & 8 d) 10 & 20 Answer: 10 & 3 3. Calorific value of coal middling generated in coal washeries during washing of coal may be around __________ Kcal/kg. a) 1000 b) 4000 c) 6000 d) 8000 Answer: 4000 4. If the enthalpy change for a reaction is zero, ΔG° is equal to _____________ a) TΔS° b) -TΔS° c) -ΔH° d) lnKeq Answer: -TΔS° 5. The heat transferred when the H2O in the products is in the vapour state is called? a) HCV b) LCV c) HHV d) None of the mentioned Answer: LCV 6. The heat transferred when the H2O in the products is in the liquid state is called? a) HCV b) LCV c) LHV d) None of the mentioned Answer: HCV 7. HCV stands f...

  Power plant Multiple Choice Questions and Answers Superheaters and Reheaters Control Multiple Choice Questions and Answers 1. Lancashire boiler has _____ internal flue tubes. a) 1 b) 3 c) 2 d) 4 Answer: 2 2. The number of fire tubes in a Cochran boiler are ___________ a) 75 b) 165 c) 225 d) 175 Answer: 165 3. The diameter of a cylindrical shell of a Scotch marine boiler varies from ___________ a) 3.5 to 4.5m b) 1.5 to 2m c) 2.5 to 3.5m d) none of the mentioned Answer: 2.5 to 3.5m 4. An economiser is installed in a boiler primarily to ___________ a) increase steam pressure b) reduce fuel consumption c) superheat the steam d) all of the mentioned Answer: reduce fuel consumption 5. Which of the following is a water tube boiler? a) Lancashire boiler b) Cochran boiler c) Babcock & Wilcox boiler d) Locomotive boiler Answer: Babcock & Wilcox boiler 6. The theoretical indicator diagram of a simple steam engine is based upon the assumption that ___________ a) there is no pressure ...