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What are the major capabilities of DBMS and why is a relational DBMS so powerful?
• Name and briefly describe the capabilities of a DBMS.
• Define a relational DBMS and explain how it organizes data.
• List and describe the three operations of a relational DBMS.
• Explain why non-relational databases are useful.
A long, thin, nonconducting plastic rod is bent into a circular loop that has a radius a. Between the ends of the rod a short gap of length l, where l
An electric heater is added to a room. If the heater has an internal resistance of 10 Ω and if energy costs 8 cents per kilowatt-hour, how much will it cost to continuously run the heater per 30-day month? Assume the voltage is 120 V.
A six-pole induction motor for vehicle traction has a 50-kW rating and is 85 percent efficient. If the supply is 220 V at 60 Hz, compute the motor speed and torque at a slip of 0.04.
A DC motor has the following parameters: Number of armature conductors = 60, length of rotor = 30 cm, radius of rotor = 10 cm, field flux density = 1 T, armature resistance = 1.2-ohm. Neglect the armature inductance. The maximum armature current r..
Three amplifiers with power gains of 15, 22 and 7 ate cascaded. The input power is 120 micro-W. What is the output power of the final amplifier stage
A separately excited DC motor runs at1500 rpm under no load with 200 V applied to the armature.The field voltage is maintain at its rated value. The speed of the motor, when it delivers a torque of 5 Nm ,is 1400 rpm.
A chip is selected at random. If the color of the chip selected is white, it is eplaced and two more white chips are added to the urn. However, if the chip drwan is blue it is not replaced and no additional chips are put in the ..
With an unknown focal length lens, they are able to capture a zoomed in image of an iris (1 cm in diameter) which is 200 pixels wide in the final image. Their current image sensor is 640x480 resolution (old technology). The pixel size is 20 micron..
a. How many poles are on the rotor winding of the induction motor? b. If the stator field in the induction machine rotates in a clockwise direction, what is the rotation direction of its rotor?
In other words, a signal on INT1 is to be able to interrupt the CPU even when the CPU is currently handling an interrupt generated by INT0, but not vice versa.
Draw the circuit and discuss the operation of SA type ADC. Determine the conversion time of an SA-ADC for 12-bit resolution,at 2.5 MHz.
Determine the time constant of the circuit. - Write the mathematical equation for the voltage vC following the closing of the switch.
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