The armature terminal voltage of a separately-excited DC motor increases while the field current and the load are held constant, will the speed of the motor increase or drop?

Q: + 30V + | 3Ω www R₁ What is the maximum power that the power supply can deliver to the load in this…

A: Given data,

Q: (a) Consider buck-boost converter with the following parameters: Vin=40 V, Vo =60 V, R=20 N, and…

A: Let T= 200μs (a) D=11+VinVoD=11+4060D=0.6 It can be used as a buck or boost converter.

Q: For an LC Oscillator, the value of the inductor is 25 mH and the value of the capacitor is 50 uF.…

A: Given information: The value of the inductor is L=25 mH. The value of the capacitor is C=50 μF. The…

Q: Pulse-amplitude modulation signals are multiplexed by using: a. subcarriers b. A/D converters c.…

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Q: 14. Find the total power.

A: The power is the ratio of square of voltage to the resistance and the unit of power is watts.

Q: Find v1 (in Volts). Give only the numeric value. 60 μF 90 V + 40 μF +2 - 20 μF 30 μF

A: Given:  A circuit with Dc voltage source and capacitors. We have to find out the voltage v1 across…

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Q: Use nodal analysis to determine current in the capacitor in the figure below. (40+/50) £2 25/0° V O…

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Q: Determine the number of turns of the primary and the secondary windings of a 60 Hz, 240/120 V ideal…

A: We have an transformer with, Primary Voltage (v1) = 240 V Secondary Voltage (V2) = 120 V Flux (ϕm) =…

Q: A very short current element is placed at the origin of the coordinate system as shown in Figure…

A: Given parameters: For the given Reference axis (r,ϕ,z), Coordinates of the current element, I…

Q: α

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Q: A platinum resistance temperature detector (RTD) is used to measured temperature of the hot gas. The…

A: A RTD is used to measure temperature of hot gas as, Sensing element resistance at temperature(T2) =…

Q: Use the following details The transformer has an applied voltage of 120 V. It has two windings.…

A: Given, V =120 V N1=100 T N2=200 T

Q: . A linear sign-magnitude PCM code consists of a. all magnitude bits b. a sign bit and magnitude…

A: 11) A linear sign-magnitude PCM code consists of a sign bit and magnitude bits ( option B).

Q: The input of an AC circuit having power factor of 0.8 lagging is 40 kVA. The power drawn by the…

A: Given  S = 40 KVA PF = 0.8 LAG

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Q: In figure the SCR has a trigger voltage of 0.75 V and a trigger current of 7mA. What input voltage…

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Q: In other words, what is the link between solar cells and GPS systems?

A: Solar cells Powering spacecraft like satellites and observatories with solar cells is incredibly…

Q: A current of 6 amperes branches into currents x, y, and z through resistors with resistences 6, 4,…

A:

Q: A child's electronic toy is supplied by three 1.58 V alkaline cells having internal resistances of…

A: Note: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question…

Q: a. Using Figure determine the minimum irradiance required to fire the device at room temperature…

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Q: A 50 MVA, 3 phase, 33 kV synchronous generator is protected by the Merz-Price protection using…

A: Given Data, VL = 33 KV CT ratio 10005 Resistance (R) = 7.5 ohms   And we have been asked to find the…

Q: A transformer has a rated output of 200 kVA at a power factor of 0.8. Determine the rated power…

A: In this question we will find transformer rated power output and reactive power....

Q: E5.3 Compute V, in the circuit in Fig. E5.3 using superposition.

A: The superposition theorem state that the sum of response of individual sources acting alone is equal…

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A: Given:  VDC=99 VVRMS=42 V Required: Amplitude modulation ratio ma

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A: given current element J.dv

Q: Find the fourier series f (x) = 2-cosx+cos (2x) — 4sin(4x) + 10cos (5x) O and list ao=2, a₁=-1,…

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Q: Two voltage waveforms are displayed on CRO as shown in Figure A6. The vertical sensitivity is 5V/DIV…

A: Given data, Diagram is given as,

Q: Determine the currents i and in, and the power developed in the 64V voltage source and 8-0 resistor…

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Q: +1 Vs 6Ω ww 3ΩΣ ΖΩ Is

A: Given data, Vs=5 V, is=10 A Circuit diagram is given as,

Q: Two overhead lines AB (Z0 = 500 Ω, length = 300 km, attenuation factor = 0.8) and BC (Z0 = 300 Ω,…

A: Given, For line AB Characteristic impedance Z0 = 500 Ω, length = 300 km, attenuation factor = 0.8…

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Q: Problem: A 250 resistor is connected inductance in parallel with an of 2.5 mH across a Vrms = 75<0°…

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Q: a.1) In a certain UJT, r'B1 = 2.5 k and r'B2 = 4 KQ. What is the intrinsic standoff ratio? a.2)…

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Q: using Nodal Analysis

A: Given- Source voltage= 64 V Source current= 5 A Source conversion-

Q: Two impedances Z1 = (10 + j5) Qand Z2 = (25 - j10) Qare connected in parallel to a 100 V, 50 Hz…

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Q: B) 6-pole alternator running at 1000 r.p.m. supplies an 8- pole induction motor. What is the actual…

A: Given: Poles in alternator, Pa=6 Alternator speed, Nsalt=1000 rpm Poles in motor, Pm=8 Motor slip,…

Q: Kirchhoff's voltage rule states that the sum of the voltage drops around any closed loop must be…

A: Given, Initial condition at t=0s charge q(0)=5C, current I(0)=1A Inductance L=10H, Resistance R=20Ω,…

Q: A light source producing 1500 candela is suspended 2.2m above a horizontal surface. Calculate the…

A: We have given an light source of , Luminous Intensity = 1500 Candela We have been asked to find…

Q: Q3. Use Laplace transform to solve the following differential equation y' - 2y = 4 ) y(0) = 1

A: Given, Differential equation y'-2y=4y0=1

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Q: Mixed-Connection Circuit Analysis 6 Consider the circuit shown with the following parameters: Vs =…

A: Given: Vs=12V, R1=120Ω, R2=56Ω, R3=270Ω, R4=150Ω Circuit diagram

Q: Problem 4: Find /, using Thevenin's or Norton's theorem

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Q: 1: A conductor moves with a velocity of 22 ms-1 at an angle of 500 to a magnetic field of length 5…

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Q: The following tests are performed on a 415 V, 950 rpm, 50 Hz three-phase induction motor WHICH s…

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Q: An amount of energy equal to 100 J is used in 5 s What is the power in watts? 10 W 20 W 30 W 40 W

A: Given data, Energy E = 100 J Time t = 5 sec

Q: A 3-phase, 50 hp, 400 V, 4-pole, 60 Hz, wye-connected synchronous motor has an armature winding…

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Q: Solve for RTH (in 02), if R=102 (Do not input the unit.) 2 A RTH 702 3Ω R www +4A

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Q: (b) Consider two half-wave dipole elements placed and oriented parallel to the z-axis. Determine the…

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Q: b) A battery with an emf of 18V and series resistance Zg-2Z, are connected at t = 0 to the sending…

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DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.