CHOITHRAM SCHOOL MANIKBAGH, INDORE CLASS XII Session

CHOITHRAM SCHOOL MANIKBAGH, INDORE
CLASS XII Session : 2014-15
SUBJECT :BUSINESS STUDIES
Allotment Date :14/09/2014
Q.no
ASSIGNMENT No: III
Submission Date :18/11/2014
Questions
Marks
1.
Name the organization which is not deliberately created.
1
2.
Name the type of organization in which official relationship exists
among the members.
1
3.
Name two websites which are commonly visited by the prospective
employees?
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4.
Why is induction is not required in the internal source of recruitment?
1
5.
Why selection is considered as negative process?
1
6.
List the different types of tests used in selection process. Explain any
three of them.
4
7.
Why the following training methods are important
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a) Vestibule Training b) Class room lectures
8.
Distinguish between authority and responsibility on the basis of:
a. Direction of flow b. Delegation c. Origin d. necessity.
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9.
Explain the organization process of any organization.
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10.
While selecting employees, an organization is not giving any priority to
disabled candidates, weaker sections in the society and even women.
Identify the values missing in the company’s selection process and also
suggest a remedy.
Explain the importance of decentralization.
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12.
Draw a diagram depicting a divisional structure of an automobile
company.
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13.
Distinguish between ‘delegation’ and ‘decentralisation’ of authority on
the basis of
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11.
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i) purpose ii) parties involved and iii) withdrawal of authority.
14.
Aman Ltd. is manufacturing toys and has production, sales, Purchase
and Finance Departments. Which type of organization structure would
you suggest to them? State any three advantages of this organization
structure.
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15.
Distinguish between training and development. What values of an
organization involve in training and development programe for their
employees?
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CHOITHRAM SCHOOL MANIKBAGH, INDORE
CLASS XII Session : 2014-15
SUBJECT :PHYSICS
Allotment Date :14/11/2014
S.No.
ASSIGNMENT No: IV
Submission Date :18/11/2014
Questions
Level
Marks
OBJECTIVE
Q.1
A bar magnet falls from a height h through a metallic ring
.Will its acceleration be equal to g? Give reason for your
answer.
Knowledge
1
Q.2
What is the power consumed in (i)purely inductive (ii)purely
capacitive circuit a.c circuit ?
Knowledge
1
Q.3
What is the power dissipated in an a.c circuit in which
voltage and current are given by V=230Sin (ωt- π/2) and
I=10Sinωt ?
Knowledge
1
Q.4
A plot of magnetic flux φ versus current I is shown in fiure
for two inductors A and B .Which one of the two has large
value of self inductance ?
Understanding
1
Q.5
The magnetic flux through a circuit of resistance R changes
Hot
1
Logical
4
by an amount  in time  t , then find the total quantity of
electric charge Q, which passing during this time through
any point of the circuit .
SA
Q.6
Derive an expression for instantaneous value of induced emf
in a coil when it is rotated in a uniform magnetic field at a
uniform angular velocity ω.How does the emf varies when
the coil is rotated through an angle 2π ?
Q7
Find an expression for mutual inductance of two long coaxial muliconceptual
solenoid . A small square loop of wire of side l is placed
inside a large square loop of wire of side L (>>l). The loops
are coplanar and their centres coincide. What is the mutual
inductance of the system?
4
Q.8
Logical
An aeroplane in which the distance between the tips of
wings is 50 m is flying horizontally with a speed of 360 kh/hr
over a place where the vertical components of earth
4
Q.9
Q.10
magnetic field is 2.0  104 Wb/m2. Calculate the potential
difference between the tips of wings.
One conducting U tube can slide inside another as shown in
Hot
figure, maintaining electrical contacts between the tubes. The
magnetic field B is perpendicular to the plane of the figure. If
each tube moves towards the other at a constant speed v then
what is the emf induced in the circuit in terms of B, l and v
where l is the width of each tube ?
Ajay got so much interested in astronomy that he decided to
Value based
make a telescope .He studied about telescope and its
construction. He prepared his own telescope .He presented
his observation in a science seminar and got first prize.
4
4
(a)What qualities do you find in Ajay ?
(b)Draw a ray diagram of a refracting type astronomical
telescope and give an expression for its magnifying power.
LA
Q.11
Explain series LCR circuit.An inductor L of reactance XL is Understanding
connected in series with a bulb B to an a.c source as shown in
figure.Briefly explain how does the lightness of the bulb
chanes when (i) number of turns of the inductor is reduced
and (ii) a capacitor of reactance Xc = XL is included in series
in the same circuit.
5
Q.12
In a transformer, the number of turns in primary coil and
secondary coil are 5 and 4 respectively. If240 V is applied on
the primary coil, then the ratio of current in primary and
secondary coil
Logical
5
Q.13
What is the principle of transformer,explain its working .A
rectangular coil of N turns and area of cross section A, is
held in time varying magnetic field given by B=Bosinωt ,
with plane of coil normal to the magnetic field . Deduce an
expression for the emf in the coil.
multiconceptual 5
Q.14
Find the formula for force experienced by current carrying
conductor placed in uniform magnetic field,Twelve wires of
equal lengths are connected to form a skeleton cube which
moves with velocity v parallel to magnetic field B. What will
be the induced emf in each arm of the cube ?
(a)A series LCR circuit is connected to an a.c source .Find an
expression for average power consumed if the phase
difference between current and emf is Ø.
Hot
Q.15
(b) An alternating voltage of frequency f is applied across a
series LCR circuit .Let fr be the resonance frequency for the
circuit .Will the current in the circuitlag,lead or remain in
phase with applied when(i)f>fr (ii)f<fr.Explain your answer
in each case.
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