What is sequence number in sliding window protocol? The number of bits in the sequence number is 2 to generate the binary sequence 00, 01, 10, 11. The size of the receiving window is the maximum number of frames that the receiver can accept at a time. It determines the maximum number of frames that […]
What does a mechanical interlock do?
What does a mechanical interlock do? Mechanically interlocked circuit breakers are intended to prohibit both power sources from being simultaneously connected to the load. The interlocking system disables one circuit breaker by mechanically preventing handle movement from the Off position while the other circuit breaker is in the On position. How does an interlock control […]
What does the intake air temperature IAT sensor measure?
What does the intake air temperature IAT sensor measure? The Intake Air Temperature Sensor (IAT) is used by the ECU to determine the temperature of the air entering the engine. This is used in conjunction with the MAP sensor to determine the density and volume of air entering the engine to make the proper fuel […]
How is the brain different from a computer?
How is the brain different from a computer? The brain uses chemicals to transmit information; the computer uses electricity. Even though electrical signals travel at high speeds in the nervous system, they travel even faster through the wires in a computer. A computer uses switches that are either on or off (“binary”). Is the human […]
What is the glass transition temperature Tg of a polymer?
What is the glass transition temperature Tg of a polymer? The glass transition temperature is the temperature range where the polymer substrate changes from a rigid glassy material to a soft (not melted) material, and is usually measured in terms of the stiffness, or modulus. How do you determine the glass transition temperature of a […]
What determines the number of valence electrons?
What determines the number of valence electrons? For neutral atoms, the number of valence electrons is equal to the atom’s main group number. The main group number for an element can be found from its column on the periodic table. For example, carbon is in group 4 and has 4 valence electrons. Oxygen is in […]
What is spring stiffness?
What is spring stiffness? A ideal spring has an equilibrium length. It is a measure of the spring’s stiffness. When a spring is stretched or compressed, so that its length changes by an amount x from its equilibrium length, then it exerts a force F = -kx in a direction towards its equilibrium position. What […]
What is a guaranteed maximum price GMP contract?
What is a guaranteed maximum price GMP contract? A guaranteed maximum price contract is a hybrid of a cost reimbursable contract and a fixed lump sum. A contractor is reimbursed the costs that it actually incurs when they are incurred, which assists with cashflow. However, unlike an alliance, those costs are capped at the Guaranteed […]
Why do poles repel each other?
Why do poles repel each other? When two like-poles point together, the arrows from the two magnets point in OPPOSITE directions and the field lines cannot join up. So the magnets will push apart (repel). What happens when two north poles are close to each other? In magnets like poles repel each other and unlike […]
What does speed change when it comes to a collision?
What does speed change when it comes to a collision? Excess speed is defined as exceeding the speed limit. — An increase in average speed of 1 km/h typi- cally results in a 3% higher risk of a crash involving injury, with a 4–5% increase for crashes that result in fatalities. — Speed also contributes […]