SSC (Marathi Semi-English) 10th Standard Board Exam [इयत्ता १० वी] - Maharashtra State Board Important Questions for Science and Technology 1

Label the four parts of an electric motor

write two uses of DC motor

Observe the following figure:

If the current in the coil A is changed, will some current be induced in the coil B? Explain.

Tell the odd one out. Give proper explanation.

Loud speaker, Microphone, Electric motor, Magnet.

Name the following diagram and explain the concept behind it.

i) Which principle is explained in this figure?
ii) Which rule is used to find out the direction of a force in this principle?
iii) In which machine this principle is used? Draw a diagram showing working of that machine

Observe the figure and answer the following questions.
a) Identify the machine shown in figure.
b) Write a use of this machine.
c) How transformation of energy takes place in this machine.

Study the following principle and answer the question.
A force is excreted on the current carrying conductor. The direction of this force depends on both the direction of the current and the direction of the magnetic field. This force is maximum when the direction of current is perpendicular to the direction of the magnetic field.
a) By which law we can determine the direction of force excreted on the current carrying conductor.
b) In which electrical equipment this principle is used.
c) Draw a diagram representing construction of this equipment.
d) Write the working of this equipment in brief.

Differentiate between conductors and insulators.

State Fleming’s Right Hand Rule.

Answer the following:

State the principles of the electric motor and electric generator. 

Answer the following question:
What is overloading? When does it occur? How can overloading be avoided?

Choose the correct option:

A conductor rod of length (l) is moving with velocity (v) in a direction normal to a uniform magnetic field (B). What will be the magnitude of induced emf produced between the ends of the moving conductor?

State true or false:

The frequency of AC is 50 Hz.

Observe the given figure of Fleming’s Right Hand Rule and write the labels of A and B correctly.

The right-hand thumb rule is also called _______ rule.

Which of the following scientist invented the rule of electromagnetic induction?

Observe the given figure of Fleming's Left Hand Rule and write the labels of 'A' and 'B':

Observe the following diagram and answer the questions.

1. Construction of which equipment does the above diagram show?
2. On which principle does this equipment work?
3. According to which law the coil ABCD rotates?
4. Write the law in your own words.
5. Where is this equipment used?

Observe the following diagram and answer the questions.

1. Explain the construction of the equipment shown in the figure.
2. How is AC generated?