Bissoy.com
Doctors Medicines MCQs Q&A

Which motor has almost replaced DC shunt motor from its applications?

Which motor has almost replaced DC shunt motor from its applications? Correct Answer Squirrel caged induction motor

Owing to the relative simplicity, cheapness and ruggedness of the squirrel cage induction motor, the shunt motor is less preferred for constant-speed drives except at low speeds. At high or medium speed applications we use induction motor, mostly squirrel caged.

Related Questions

A Windows 2000 Server computer named server2 runs numerous 32bit applications and two 16bit applications. Users start the 16bit applications by running APP1.EXE for one application and APP2.EXE for another application. The 16bit applications are configured to run in the separate memory space. You want to create a performance base like chart in the system monitor for all the applications on server2. You add all of 32bit applications and now you want to add two 16bit applications. What should you do?
Consider the following statements: In the above figure, the curves pertain to the DC motor A. Speed vs Armature current characteristic of a DC shunt motor B. Torque vs Armature current characteristic of a DC shunt motor C. Speed vs Armature current characteristic of a DC series motor D. Torque vs Armature current characteristic of a DC series motor
A 100KW, 250 V, 400 A, a long shunt compound generator has an armature resistance of 0.025 ohms. There are 1000 shunt fields turns per pole and 3 series field turns per pole. The series field is connected in a such a fashion that positive armature current produces direct-axis MMF which adds to that of the shunt field. Compute the gross MMF at the rated terminal current when shunt field current is 4.7A and speed is 1150 rpm.
Which of the following statements are correct for dc shunt motor? 1. Speed of a shunt motor is sufficiently constant 2. For the same current input, its starting torque is not high as that of series motor 3. The motor can be directly coupled to a load such as fan whose torque increases with speed Select the correct answer using the code given below.
If '÷' is replaced with '+','×' is replaced with '-','+' is replaced with '×' and '-' is replaced with '÷', then what will be the value of the given expression? 8 + 5 × 54 - 9 ÷ 3 = ?
A dc motor is connected in the short-shunt configuration, but the series and the shunt windings get interchanged by mistake and the motor is connected to the rated voltage?
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer : Statements : Applications of applicants who do no fulfil eligibility criteria and/or who do not submit applications before last date will be summarily rejected and will not be called for the written test. Conclusions : I. Those who are called for the written test are those who fulfil eligibility criteria and have submitted their applications before last date. II. Written test will be held only after scrutiny of applications.
Directions : In each of the following questions a statement is given, followed by two conclusions. Give answer :

Statements : Applications of applicants who do no fulfil eligibility criteria and/or who do not submit applications before last date will be summarily rejected and will not be called for the written test.

Conclusions :
I. Those who are called for the written test are those who fulfil eligibility criteria and have submitted their applications before last date.
II. Written test will be held only after scrutiny of applications.
Which of these sentences is/are grammatically correct? A) He gone out to have food almost an hour ago but hasn't returned yet. B) He went out to have food almost an hour ago but hasn't returned yet. C) He went out to have food almost a hour ago but hasn't returned yet.
In case of synchronous motor, which of the following are true? a. Synchronous motor is not self-starting b. If the rotor poles are excited by field current and the stator terminals are connected to AC supply, motor vibrates. c. Variable frequency supply is used to start synchronous motor. d. By using frequency converter, a synchronous motor can be brought from standstill to its desired speed.