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Class 6 Questions asked by Filo students

Views: 5,954

A CS amplifier with constant DC drain current has a negative feedback (K) from the Drain to the Gate. Assume unCox varies by

p m 55%

, and lamda varies by

p m 50%

. Find the minimum loop gain that limits the closed loop gain to less than

p m 15.0%

3
4
5
6
7

Topic:

Atoms, Nuclei & Dual nature

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Views: 5,277

The relation between frequency

u

λ

and velocity of propagation

v

Topic:

Waves & Oscillation

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Views: 5,309

Q.18 Write an essay on any one of the following topics in about 200 words :

[1 + 4 + 1 = 6]

Problem of Population
If I were The Prime Minister
Any Match
Advantage of Science and Technology.

Topic:

Optics

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Views: 5,236

Q.18 Write an essay on any one of the following topics in about 200 words :

[1 + 4 + 1 = 6]

Problem of Population
If I were The Prime Minister
Any Match
Advantage of Science and Technology.

Topic:

Optics

View solution

Views: 5,997

Four electrical charges are arranged on the corners of a

10 cm

square as shown. What would be the direction of the resulting electric field at the center point

P ?

$i g h t a rro w$ ::. $u p a rro w$
$l o n g l e f t a rro w$
$d o w na rro w$

Topic:

Electrostats

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Views: 5,083

Four electrical charges are arranged on the corners of a

10 cm

square as shown. What would be the direction of the resulting electric field at the center point

P ?

$i g h t a rro w$ ::. $u p a rro w$
$l e f t a rro w$
$d o w na rro w$

Topic:

Electrostats

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Views: 5,494

The total current supplied to the circuit by the battery is

Topic:

Electrostats

View 4 solutions

Views: 5,931

If at the moment

t = 0

, the separation between the cars is

90 m

and the length of each car is

5 m

, the moment of time at which they completely cross each other is

t =

$1 s$
$4 s$
$22 s$
$3.6 s$

Topic:

Mechanics

View 3 solutions

Views: 5,814

Bernoullis equation is given by [ p+frac{1}{2} ho v^{2}+h ho g=k ] Where

p =

p =

v =

h =

height of the liquid column,

g =

acceleration due to gravity and

k

is constant. The dimensional formula for

k

is same as that for :

Velocity gradient
Pressure gradient
Modulus of elasticity
Thrust

Topic:

Atoms, Nuclei & Dual nature

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Question 10

Views: 5,980

\underline{E}

. the fumbergy (E), velo the fundamental quantities, the dimensional formul is

$l e f t [EV^{- 1} T^{- 2} i g h t]$
[EV TY
$l e f t [E^{- 2} V^{- 1} T^{- 3} i g h t]$
$l e f t ∣ EV^{-} T^{- 1} i g h t ∣$

Topic:

Atoms, Nuclei & Dual nature

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Question 11

Views: 5,996

Initial velocity (iii) velocity at 3 second. (iv) Accelenation.

Oisplacementay
Displacement related to time for a sfraight line motion is $x = t + 3$ . Find its velocity and acceleration at $t = 2 ser$
Acceleration of a body moving in a straight line is $a = 4 t - 3$ . find change in velocity & displacemat covened from 28 to 48 .

Topic:

Waves & Oscillation

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Question 12

Views: 5,618

An insect want to move from point

A

B

as shown by completion one revolution, then find the minimum possible distance travelled by the insect.

$2 π R + l$
$l$
$4 π^{2} R^{2} + l^{2}$
$2 π Rl$

Topic:

Mechanics

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Question 13

Views: 5,714

The algebraic sum of voltages around any closed path in a network is equal to

infinity
1
0
negative polarity

Topic:

Electrostats

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Question 14

Views: 5,458

If 2 A current is flowing in the shown circuit, then potential difference

l e f t (V_{n} - V_{D} i g h t)

in balanced condition is

$12 V$
$6 V$
$4 V$
zero

Topic:

Electrostats

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Question 15

Views: 5,298

Question 9: A brass wire

1.8 m

2 7^{\circ} C

is held taut with little tension between two rigid supports. If the wire is cooled to a temperature of

- 3 9^{\circ} C

, what is the tension developed in the wire, if its diameter is

2.0 mm

? Co-efficient of linear expansion of brass

= 2.0 \times 1 0^{- 5} K^{- 1}

; Young's modulus of brass

= 0.91 \times 1 0^{11} Pa

Topic:

Heat & Thermodynamics

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Question 16

Views: 5,669

An element of atomic number 16 has a wavelength

λ

K_{α}

line. What is the wavelength of the

K_{α}

line emitted by an element of atomic number 31 .

$3 λ$
$\frac{λ}{2}$
$6 λ$
$\frac{λ}{4}$

Topic:

Electrostats

View solution

Question 17

Views: 5,588

An element of atomic number 16 has a wavelength

λ

K_{α}

line. What is the wavelength of the

K_{α}

line emitted by an element of atomic number 31 .

$3 λ$
$\frac{λ}{2}$
$6 λ$
$\frac{λ}{4}$

Topic:

Electrostats

View solution

Question 18

Views: 5,567

7. In the circuit above,

V = 9.6 V, R_{1} = 2Ω, R_{2} = 9Ω

R_{3} = 18Ω

. Find the current through

R_{3}

Topic:

Electrostats

View 3 solutions

Question 19

Views: 5,099

When mass and speed are doubled, the kinetic energy increases

2 times
4 times
8 times
16 times.

Topic:

Heat & Thermodynamics

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Question 20

Views: 5,829

[1983, 1981 ] A vertically projected body has its energy

maximum at the highest point
minimum at the highest point
same at all points
none of the above.
$A$ is larger than $B$

Topic:

Heat & Thermodynamics

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