Electrical Machines Operating Characteristics Dc Motor Online Exam Quiz
Electrical Machines Operating Characteristics Dc Motor GK Quiz. Question and Answers related to Electrical Machines Operating Characteristics Dc Motor. MCQ (Multiple Choice Questions with answers about Electrical Machines Operating Characteristics Dc Motor
Choose the best option which identifies about the below characteristics.
Options
A : (1)series motor (2) Cumulative compound motor (3) Shunt motor
B : (1)Cumulative compound motor (2) series motor (3) Shunt motor
C : (1)Cumulative compound motor (2) Shunt motor (3) series motor
D : (1)Shunt motor (2) series motor (3) Cumulative compound motor
For a dc shunt motor of 5 kW, running at 1000 rpm, the induced torque will be ____________
Options
A : 47.76 N
B : 57.76 N
C : 35.76 N
D : 37.76 N
For a 100 hp 250 V, compound dc motor with compensating winding has a field current of 5 A to produce a voltage of 250 V at 1200 rpm. What will be the shunt field current of this machine at no load?
Options
A : 5 A
B : 5.6 A
C : 4 A
D : 0 A
Mark the correct option which affects the terminal voltage of a dc shunt motor.
Options
A : Armature reaction
B : Source voltage variations
C : Compensating winding
D : Any of the mentioned
It is advised not to run dc series motor with no load. Why?
Options
A : Because zero torque at no load will make speed infinite
B : Because zero torque as no load will not let machine start
C : Because infinite torque will be produced
D : None of the mentioned
A student is given a differential compound motor and he has been asked to make it start. How will he try?
Options
A : By shorting series field at start
B : To run as shunt motor at start
C : By making rated current at start
D : All of the mentioned
A dc shunt motor is connected to the source through 3-point starter. Suddenly if we starter handle is moved fastly from off to on position, then the _________
Options
A : motor will draw large current
B : motor will not start
C : motor will burn
D : all of the mentioned
The flux and the internally generated voltage of a dc machine is a ________ function of its magneto-motive force.
Options
A : non-linear
B : linear
C : constant
D : inverse
The speed torque of the differential compound dc motor is shown below. What conclusions can be made?
Options
A : This is an unstable machine
B : There is regenerative increment in the speed
C : This is impractical to be used
D : All of the mentioned
It is impossible to start a differential compounded dc motor.
Options
A : True
B : False
C :
D :
Electrical Machines Action Commutator more Online Exam Quiz
Electrical Machines Multiple Choice
Electrical Machines Online Quiz
Electrical Machines Online Test
Electrical Machines Open Circuit Short Circuit Test
Electrical Machines Operating Characteristics Dc Generator
Electrical Machines Operating Characteristics Induction Motors
Electrical Machines Permanent Magnet Dc Pmdc Motors
Electrical Machines Physical Concepts Synchronous Machine Operation
Electrical Machines Power Angle Characteristics Synchronous Machines