Questions and Answers
What is the noise voltage calculated using the formula $V_{noise} = \sqrt{4kTR(BW-f)}$ with Ambient Temperature 65⁰C, Frequency 10 kHz, Resistance 100 Ohms?
How should an uninterruptible power system be connected to the network?
In a power flow study, which statement is most correct?
Which type of engineer conducts reliability and sustainability tests?
Signup and view all the answers
Which of the following statements is not correct based on Ohm’s Law?
Signup and view all the answers
What does the room amplifier in a wireless system amplify?
Signup and view all the answers
Harmonic currents in a power system may cause which of the following?
Signup and view all the answers
In the wind load formula for overhead line structures, what does the term Kz represent?
Signup and view all the answers
Which resonant modes does the oscillator circuit use?
Signup and view all the answers
What function does the OP-AMP circuit perform?
Signup and view all the answers
What is the best economical way to start a single-phase motor?
Signup and view all the answers
What describes the strength of materials?
Signup and view all the answers
For which circuit elements is superposition valid?
Signup and view all the answers
What is the difference between EPROM and EEPROM?
Signup and view all the answers
Why is steel used in concrete structures?
Signup and view all the answers
For a 12 AWG wire, what should be the circuit breaker rating?
Signup and view all the answers
If the fuse rating is 8 Amperes, what does that mean?
Signup and view all the answers
What makes CMOS Inverter superior to R-Pull up inverters?
Signup and view all the answers
The delay time for series of activities that would not affect the project timing is called what?
Signup and view all the answers
Which one of the following does not describe ceramics?
Signup and view all the answers
Which device is used to measure potential difference?
Signup and view all the answers
The most appropriate site for a new library is one adjacent to which areas?
Signup and view all the answers
What is usually specified with Number 34 in 'N34’ E'?
Signup and view all the answers
Changing the excitation in a grid connected to an alternator will have what effect?
Signup and view all the answers
Sensor transducers will transfer what?
Signup and view all the answers
What is the term for component arrangement for waves in transmitting and receiving?
Signup and view all the answers
What can a passive filter do?
Signup and view all the answers
Which type of material has high thermal and electrical conductivity?
Signup and view all the answers
Given $V = 50 \cos(40wt + 30) + 28.2 \cos(40wt + 30)$ and $R = 5$, find P:
Signup and view all the answers
What is the payback period for a project with initial investment of 2.0 million QR and net annual profit of 150,000 QR using a 10% desired rate of return?
Signup and view all the answers
Which systems use Assembly language?
Signup and view all the answers
Which describes a weak power system?
Signup and view all the answers
For the diagram shown, what is the required minimum clearance distance, R, if the phase voltage is 13,800V?
Signup and view all the answers
Project Control will occur at which stage?
Signup and view all the answers
What is the slip frequency if a 50Hz induction machine no-load speed is 2900 rpm?
Signup and view all the answers
Which special purpose diode is formed by a junction between metals and a semiconductor?
Signup and view all the answers
What is the worth after 5 years of an investment of One Million Qatari Riyals if the APR is 9% paid monthly?
Signup and view all the answers
What is not part of Scope Management?
Signup and view all the answers
What process identifies, studies, analyzes, and rectifies the root cause of incidents?
Signup and view all the answers
Which is not a typical type of activity dependency in time management?
Signup and view all the answers
Which is not a resource related to activities?
Signup and view all the answers
When is the process of decomposing deliverables into manageable components complete?
Signup and view all the answers
Which does project life cycle differ from product life cycle?
Signup and view all the answers
When is the best time to assign a project manager to a project?
Signup and view all the answers
What is called the process of scheduling periodic tasks based on the highest priority for tasks with the shortest period?
Signup and view all the answers
What is the final step in defining a work breakdown structure?
Signup and view all the answers
In transformer saturation, what occurs?
Signup and view all the answers
Which statement is most nearly correct when using symmetrical components?
Signup and view all the answers
To ensure an instrument does not drift with time, what should we do?
Signup and view all the answers
What are the most important components of sustainability?
Signup and view all the answers
For the design and implementation of smoke detectors and door control systems, it is preferable to use what?
Signup and view all the answers
What does QSAS stand for?
Signup and view all the answers
According to Brundtland Report, what are the three main pillars of sustainable development?
Signup and view all the answers
What is the most commonly used circuit breaker in distribution level?
Signup and view all the answers
Which transmission voltage is not applicable in Qatar?
Signup and view all the answers
Which of the following has the highest input impedance?
Signup and view all the answers
What is the definition of a battery that has long self-discharge property?
Signup and view all the answers
What is the transconductance of BJT?
Signup and view all the answers
The power factor of an alternator depends on what?
Signup and view all the answers
What is the induction load running at stability slip?
Signup and view all the answers
If an induction motor speed at no load is 745 RPM, what is the rated speed?
Signup and view all the answers
What type of RCC will give high tensile strength?
Signup and view all the answers
What is the resistance for a potential of 100W and 200V?
Signup and view all the answers
What is the unit of conductance?
Signup and view all the answers
What is the unit of conductivity?
Signup and view all the answers
What is the unit of resistance?
Signup and view all the answers
What is the unit of resistivity?
Signup and view all the answers
What is the primary concern when using current transformers with a differential relay?
Signup and view all the answers
A wristwatch mercury cell has what capacity?
Signup and view all the answers
Study Notes
Electrical/Electronic Engineering Key Concepts
-
Thermal Noise Calculation
- Formula: ( V_{noise} = \sqrt{4kTR(BW-f)} )
- Parameters:
- Ambient Temperature: 65°C
- Boltzmann's constant ( k = 1.38 \times 10^{-23} )
- Resistance: 100 Ohms
- Frequency: 10 kHz
-
Uninterruptible Power Supply (UPS)
- Should be connected in parallel to feed electrical power during normal operation.
-
Power-Flow Study
- Importance of differentiating bus types:
- Slack bus: Designated for voltage control.
- Voltage-controlled & load buses serve specified roles.
- Importance of differentiating bus types:
-
Reliability Testing
- Performed by Testing Engineers, focusing on system reliability and sustainability.
-
Ohm’s Law Misconceptions
- Incorrect articulation: Current/Potential ≠ Constant.
-
Wireless Systems
- The room amplifier amplifies encoded and modulated signals.
-
Harmonic Effects
- Harmonics can cause excessive heating, circuit malfunctions, and resonance.
-
Resistance Combinations
- Three 1-Ohm resistors yield 5 different total resistance values in various combinations.
-
Wind Load Calculation
- Wind load ( L_{Si} ) involves parameters including ( Kz ), representing the Velocity Pressure Coefficient.
-
Lamp Resistance
- For a 100W lamp at 200V, the resistance calculated is 400 Ohms.
-
Oscillator Circuit
- Operates in series resonant mode using a crystal.
-
Operational Amplifiers (OP-AMP)
- Functions vary; one may perform integration or differentiation.
-
Motor Starting Methods
- Inductive method is ideal for starting single-phase motors economically.
-
Strength of Materials
- Refers to their ability to withstand applied load without failure.
-
Superposition Principle
- Valid for circuits incorporating independent sources.
-
EPROM vs. EEPROM
- EEPROM is re-erasable electrically, whereas EPROM requires ultraviolet light for erasure.
-
Steel in Concrete Structures
- Used for high rigidity and matching thermal expansion with concrete.
-
12 AWG Wire Circuit Breaker Rating
- Typical rating is 20A.
-
Fuse Rating
- An 8A fuse melts if current exceeds 8A.
-
CMOS Inverter Advantages
- Notable for high impedance and lower propagation delay.
-
Project Control
- Integral throughout the entire project process, including construction.
-
Induction Motors
- No-load speed and slip frequency calculations are essential for performance evaluation.
-
Types of Diodes
- A Schottky diode is formed at the junction of metal and semiconductor.
-
Investment Returns
- Payback period calculations utilize net profit and desired rate of return.
-
Sustainability Components
- Economic, social, and environmental factors are equally vital.
-
Fire Alarm Systems
- Microcontrollers are preferred for design and implementation.
-
QSAS Definition
- Stands for Qatar Sustainability Assessment System.
-
Brundtland Report Attributes
- Defines sustainability through economic, environmental, and social pillars.
-
Direct Costs in Projects
- Examples exclude safety expenses, classified as indirect costs.
-
Work Breakdown Structure (WBS)
- Decomposition is achieved when all work elements are manageable.
-
Circuit Breaker Functions
- Differentiated by current interrupting capabilities and application in various contexts.
-
Battery Life Calculation
- A mercury battery of specified capacity can last for 18 months at defined current draw.
-
Stability of Systems
- Requires analysis against established criteria for assessing operational conditions.
These notes summarize critical points and concepts essential for understanding Electrical/Electronic Engineering principles examined in the reviewer material.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on key concepts in Electrical and Electronic Engineering. This quiz covers thermal noise calculations, UPS configurations, power-flow studies, and more. Challenge yourself to understand these fundamental principles!