Explore topic-wise MCQs in Design Electrical Machines.

This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Design Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.

1.

For a DC generator, given D = 0.35 m, L = 0.21 m, Coefficient of output = 108.5, efficiency = 0.9, speed = 1400 rpm. What is the output power of the DC generator?

A. 65.12 W
B. 72.35 KW
C. 72.35 W
D. 65.12 KW
Answer» C. 72.35 W
Discussion
2.

For a DC motor, what is the output power equation?

A. Output power = Generated Power / efficiency
B. Output power = Generated Power * efficiency
C. Output power = Generated Power
D. Output power = Generated Power + efficiency
Answer» D. Output power = Generated Power + efficiency
Discussion
3.

What are the terms related to deriving the output equation of the DC machine?

A. specific electric loading
B. specific magnetic loading
C. thermal coefficient of machine
D. specific electric and magnetic loading
Answer» E.
Discussion
4.

The output equation of the DC machines can be used to calculate the speed of the machine.

A. true
B. false
Answer» B. false
Discussion
5.

What are the components of the main dimensions of output equation of DC machine?

A. diameter
B. length
C. diameter and length
D. voltage
Answer» D. voltage
Discussion
6.

FOR_A_DC_MOTOR,_WHAT_IS_THE_OUTPUT_POWER_EQUATION??$

A. Output power = Generated Power / efficiency
B. Output power = Generated Power * efficiency
C. Output power = Generated Power
D. Output power = Generated Power + efficiency
Answer» D. Output power = Generated Power + efficiency
Discussion
7.

For_a_DC_generator,_given_D_=_0.35_m,_L_=_0.21_m,_Coefficient_of_output=_108.5,_efficiency=_0.9,_speed=_1400_rpm._What_is_the_output_power_of_the_DC_generator?$

A. 65.12 W
B. 72.35 KW
C. 72.35 W
D. 65.12 KW
Answer» C. 72.35 W
Discussion
8.

For a DC generator, what is the output power equation?

A. Output power = Generated Power * efficiency
B. Output power = Generated Power / efficiency
C. Output power = Generated Power – efficiency
D. Output power = efficiency / generated power
Answer» C. Output power = Generated Power ‚Äö√Ñ√∂‚àö√ë‚àö¬® efficiency
Discussion
9.

What are the terms related in deriving the output equation of the DC machine?

A. specific electric loading
B. specific magnetic loading
C. thermal coefficient of machine
D. specific electric and magnetic loading
Answer» E.
Discussion
10.

What is the output equation of DC machine?

A. Output power = Output Coefficient of the machine* Diameter<sup>2</sup> * Length * Speed in rpm
B. Output power = Output Coefficient of the machine* Diameter<sup>2</sup> * Length * Speed in rps
C. Output power = Output Coefficient of the machine* Diameter<sup>2</sup> * Length / Speed in rps
D. Output power = Output Coefficient of the machine* Diameter<sup>2</sup> * Length / Speed in rpm
Answer» C. Output power = Output Coefficient of the machine* Diameter<sup>2</sup> * Length / Speed in rps
Discussion
11.

The output equation of the DC machines can be used to calculate the speed of the machine?

A. true
B. false
Answer» B. false
Discussion
12.

What is the starting equation for deriving the output equation of DC Machines?

A. P = Generated Emf + Armature Current
B. P = Generated Emf – Armature Current
C. P = Generated Emf * Armature Current
D. P = Generated Emf / Armature Current
Answer» D. P = Generated Emf / Armature Current
Discussion
13.

What are the components of main dimensions of output equation of DC machine?

A. diameter
B. length
C. diameter and length
D. voltage
Answer» D. voltage
Discussion
14.

What can be found out using the output equation of the DC machine?

A. main dimensions
B. angle of rotation
C. losses
D. efficiency
Answer» B. angle of rotation
Discussion
15.

With what component is the output equation of DC machines related to?

A. power
B. voltage
C. current
D. losses
Answer» B. voltage
Discussion