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A stepper motor is being used to move a crane. The motor has the following properties: Holding torque = 2 m.kg, dynamic torque = 1.5 m.kg, and detent torque = 0.5 m.kg. Through a 1:5 gear, the motor (motor connected to the smaller gear), turns a 0.5 meter pulley around which a rope is wound.
How much weight can the crane lift (in kg)? How much weight can the crane continue to support with the power on; with the power off?
The current flowing through a 300-mH inductance is given by 5exp(-200t) A, in which time t is in seconds. A) Find an expression for the voltage in terms of t. B) Find an expression for the power in terms of t.
If there are 500 atoms in the sample and assuming that from any state all possible downward transitions are equally probably, what is the total number of photons that will be emitted when all atoms return to the ground state
1.5V battery. Design a voltage divider to provide a voltage that is approximately 1/3 of the battery voltage. Use resistances in the kilo ohms range. Redesign your divider so that the resistors are in Mega ohms range.
A 25KW, 250V dc shunt generator has armature and field resistances of 0.06 ohm and 100 ohm respectively, determine the total armature power developed when working (1) as a generator delivering 25KW output and (2) as a motor taking 25KW
Draw the state diagram for a sequence that detects the sequence 0101 using a minimal number of states. The detector should also detect overlapping sequences. Design the circuit using D flip-flops. Draw the logic diagram.
(b) Calculate the power dissipated in the MOSFET when the lamp is operating at its rated current. (c) The maximum output current available from the logic system is 30mA. Explain why an NPN transistor would be unsuitable for this appli..
Generate a new random variable X with pdf fX. Specifically, we want to generate a Gaussian random variable and relationship between Rayleigh and Gaussian distributions.
Consider a three-phase distribution feeder with line reactance of10 ohm supplying a three-phase Y-connected load of 200 kVA at power factor of 0.85 lagging.
Design a circuit that will multiply the input voltage by +12. That is the output voltage is 12v1 where v1 is the input voltage. All resistors should be at least 12ohms.
A MOSFET transistor is being used as a converter switch in a 100v system. It is switching at 50 KHz and has a linear transition time of 3us. The full load current is 40 amps. - How much average power is being wasted due to switching
For a 12-bit linear PCM code with a resolution of 0.02 V, determine the voltage range that would be converted to the following PCM codes. (a) 1 0 0 0 0 0 0 0 0 0 0 1 (b) 0 0 0 0 0 0 0 0 0 0 0 0 (c) 1 1 0 ..
An infinite grounded conducting tube of radius 10cm is centered on the z axis. A concentric charged tube of radius 6 cm has a surface charge density of 24 uC/m2. A 1m long section of the charged tube is compressed to change its radius to 3 cm.
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