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Which of the following Torque (T) - Armature Current (la) characteristics is true for Differential Compound Motor?

F4 Savita Engineering 27.08.2022 D1

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Torque-Current Characteristics & Speed-Armature Current Characteristics of DC Motor:

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More DC Motor Characteristics Questions

Q1.Which of the following graphs represent a DC series motor?
Q2.The electromagnetic torque (Te) Vs Armature current (la) characteristics of ___________ machine is shown in below figure.
Q3.Which of the following Torque (T) - Armature Current (la) characteristics is true for Differential Compound Motor?
Q4.The curve represents _____.
Q5._______ is also known as electrical characteristics of motor.
Q6.In a D.C. motor, ________________ is also known as electrical characteristics.
Q7.If N is the speed of a D.C. series motor and Ia is the armature current then
Q8.The torque-speed characteristic of a D.C. shunt motor is
Q9.Which feature of D.C. motors is essential for traction applications?

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Q1.What is the relationship between back EMF and the supply voltage in a DC motor?
Q2.Why is the simple brake test generally used for small motors only?
Q3.Universal motors exhibit high starting torque due to _______.
Q4.In the torque-load characteristic curve of a DC series motor, what happens as the load increases?
Q5.It is intended to measure the resistance of the series field winding of a DC series motor accurately. Which is the most suitable method?
Q6.A 220 V DC shunt motor has an armature resistance of 0.5 Ω. If the full load armature current is 20 A, what is the induced EMF?
Q7.In variable torque applications, where the torque required varies with the square of the speed, the motor will consume only _________ as much energy at 50% speed than it will at 100% speed.
Q8.A 25 kW, 250 V, DC shunt generator has armature and field resistances of 0.06 Ω and 100 Ω, respectively. Find the armature current.
Q9.A typical characteristic of DC series motor is shown below. Which parameter is plotted on the Y-axis?
Q10.In a 2-wire DC transmission line, the loop resistance is 80 Ω. Find the resistance of a single conductor.
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More Electrical Machines Questions

Q1.If a 6-pole induction motor operates on a 60 Hz supply, its synchronous speed is _____________.
Q2.How are the segments of the commutator insulated from each other?
Q3.Which statements about voltage drop in an alternator are correct? I. The voltage drop due to armature resistance (IaRa) is in phase with the armature current (Ia). II. At unity power factor, the voltage drop IaRa directly subtracts from the generated EMF (E). III. For a leading power factor load, IaRa contributes to an increase in terminal voltage (V). IV. Armature resistance has no effect on voltage regulation.
Q4.What does the flux created by the load current in the primary winding, which links only with the primary winding, represent?
Q5.In distribution transformers, the explosion vent is designed to:
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Q8.Compared to the MMF method, the EMF method is ___________.
Q9.Which application is a common use of synchronous motors? 
Q10.The same polarity condition is essential in parallel operation because: 
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