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What is the symbol of acceleration?
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Acceleration formula

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Answer :

The rate of acceleration on suburban or urban service is in the range 1.6 to 4.0 km phps.

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Answer :

The rate of acceleration on suburban or urban services is restricted by the consideration of Passenger Discomfort.

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What is photodiode? Draw the symbol and explain operation of photodiode. 

Answer :

A photodiode is a light detector that converts light into an electrical current. A photodiode is a semi-conductor device, with a p-n junction and an intrinsic layer between p and n layers ... current is independent of reverse bias voltage. Reverse current is mostly depends on the light intensity.

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What is the symbol of a capacitor?

Answer :

symbol of a capacitor

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What is the symbol for AC power?

Answer :

If you need to measure alternating current in a circuit, different multimeters have different symbols to measure it (and the corresponding voltage), usually "ACA" and "ACV," or "A" and "V" with a squiggly line (~) next to or above them.

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Draw symbol of NPN and PNP transistors. 

Answer :

symbol of NPN and PNP transistors

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Description :

Define resistor and draw symbol of variable resistor.

Answer :

Resistor: A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Symbol of variable resistor:   

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Draw symbol & V-I characteristics of (i) LASCR (ii) DIAC (iii) TRIAC

Answer :

(i) LASCR:  (ii) DIAC:  (iii) TRIAC: 

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Description :

Draw the symbol of LED & photodiode. 

Answer :

Symbol of LED & photodiode

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Description :

Electrical quantities (symbol and basic unit)

Answer :

Electrical quantities (symbol and basic unit)

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Description :

Draw symbol of LED and explain it’s working principle.

Answer :

Construction of LED: The basic structure of LED is shown in fig.(a). The active region exists between the p and n regions. The light emerges from the active side in all the directions when electron hole-pairs ... fig.(c). In this way an LED emits light. This is the principle of operation of LED.

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Fast acceleration and high-speed cruising electric traction drive motor is (A) separately excited dc motor (B) DC series motor (C) AC series motor (D) 3-phase squirrel cage induction motor 

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What is the angle between instantaneous displacement and acceleration during the retarded motion  (a) Zero (b) π/4 (c) π/2. (d) π. 

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A particle starts with velocity u and moves with constant acceleration a .what is the nature of the graph between the time (t) and the displacement (x). (a) straight line (b) symmetric parabola © Asymmetric parabola (d) Rectangular hyperbola.

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A particle starts from rest and moves with constant acceleration a. what is the nature of the graph between the time (t) and the displacement.  (a) straight line (b) instant velocity (c) average speed (d) average velocity

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Consider a source with symbols A, B, C, D with probabilities 1/2, 1/4, 1/8, 1/8 respectively. What is the average number of bits per symbol for the Huffman code generated from above information? (A) 2 bits per symbol (B) 1.75 bits per symbol (C) 1.50 bits per symbol (D) 1.25 bits per symbol

Answer :

(B) 1.75 bits per symbol

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What is the commonest symbol on flags of the world

Answer :

Star

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What flower is the symbol of secrecy

Answer :

Rose

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What is the chemical symbol for tungsten

Answer :

W

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The primary purpose of the inclusion of out of class activities as part of the overall school programme is Options: A) To meet accreditation requirements B) To keep children under supervision after school C) To provide other avenues of pupil's self realization D) To provide students with a means of acceleration through earning extracredits

Answer :

C) To provide other avenues of pupil's self realization 

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In practice at the secondary level, the most common provision for individual-differences is Options: A) Ability -grouping B) Acceleration and retardation C) Different curricula D) Different expectations from students

Answer :

D) Different expectations from students 

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The process of improving the quality of rubber by heating it with sulphur is called. (1) Vulcanization (2) Acceleration (3) Sulphonation (4) Galvanization

Answer :

Vulcanization

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Description :

Acceleration is (1) Inversely proportional to force (2) Inversely proportional to mass (3) Directly proportional to mass (4) Directly proportional to force

Answer :

Inversely proportional to force

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A body moving in a circular path with a constant speed has a (1) constant velocity (2) constant acceleration (3) constant kinetic energy (4) constant displacement

Answer :

constant kinetic energy

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A particle is thrown vertically upward. When it reaches the highest point, it has (1) a downward acceleration (2) an upward acceleration (3) a downward velocity (4) a horizontal velocity

Answer :

a downward acceleration

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Why is weightlessness experienced while orbiting the earth in space ships ? (1) Inertia (2) Acceleration (3) Zero gravity (4) Orbital motion

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During which of the following operating conditions of an automobile, carbon monoxide content in exhaust gas is maximum? (1) Acceleration (2) Cruising (3) Idle running (4) Deacceleration

Answer :

Idle running

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Description :

The apparent weight of a man in a lift is less the real weight when : (1) the lift is going up with an acceleration (2) the lift is going down with uniform speed (3) the lift is going up with uniform speed (4) the lift is going down with an acceleration

Answer :

the lift is going down with an acceleration

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Description :

A person can jump higher on the moon’s surface than on the earth because : (1) the moon’s surface is rough (2) the acceleration due to gravity in moon is smaller than that on the earth. (3) the moon is cooler than earth (4) the moon has no atmosphere

Answer :

the acceleration due to gravity in moon is smaller than that on the earth.

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Description :

If a body moves with a constant speed in a circle (1) no work is done on it (2) no force acts on it (3) no acceleration is produced in it (4) its velocity remains constant

Answer :

 its velocity remains constant

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Description :

The motion of a body around a circular path is an example of (1) Uniform velocity, variable acceleration (2) Uniform speed, uniform velocity (3) Uniform speed, variable velocity (4) Uniform speed, variable acceleration

Answer :

Uniform velocity, variable acceleration

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Description :

The dimension MLT–2 corresponds to (1) force (2) work done (3) acceleration (4) velocity

Answer :

force

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When a body falls from an aeroplane, there is increase in its (1) Kinetic energy (2) Mass (3) Acceleration (4) Potential energy

Answer :

Acceleration

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If we want to calculate the pressure of a liquid at the bottom of a vessel, the quantity which is not required to determine it, is (1) Height of the liquid column (2) Surface area of the bottom of the vessel (3) Density of the liquid (4) Acceleration due to gravity at the bottom of the vessel

Answer :

Surface area of the bottom of the vessel

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Description :

As we go from Equator to North pole the value of ‘g’, the acceleration due to gravity (1) remains the same (2) decreases (3) increases (4) None of the above

Answer :

increases

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Description :

The slope of a velocity-time graph represents (1) acceleration (2) displacement (3) distance (4) speed

Answer :

acceleration

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Description :

The spokes used in the wheel of a bicycle increase its (1) Moment of inertia (2) Velocity (3) Acceleration (4) Momentum

Answer :

Moment of inertia

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Description :

The sensation of weightlessness in a spacecraft in an orbit is due to the (1) absence of gravity outside (2) acceleration in the orbit which is equal to the acceleration due to gravity outside (3) presence of gravity outside but not inside the spacecraft (4) fact that spacecraft in the orbit has no energy

Answer :

 acceleration in the orbit which is equal to the acceleration due to gravity outside

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Description :

For a body moving with non-uniform velocity and uniform acceleration (1) Displacement – Time graph is linear (2) Displacement – Time graph is non-linear (3) Velocity – Time graph is nonlinear (4) Velocity – Time graph is linear

Answer :

Displacement – Time graph is non-linear

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Description :

A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to (1) Outward pull on him (2) Inertia of motion (3) Change in momentum (4) Change in acceleration

Answer :

Inertia of motion

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Description :

If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with (1) constant speed (2) constant velocity (3) constant acceleration (4) varying acceleration

Answer :

constant acceleration

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Description :

The acceleration due to gravity at the equator (1) is less than that at the poles (2) is greater than that at the poles (3) is equal to that at the poles (4) does not depend on the earth’s centripetal acceleration 

Answer :

is less than that at the poles

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Description :

The time elapsed is plotted along X-axis and the acceleration is plotted along the Y-axis. The area between the graph and the X-axis gives. (a) Average velocity (b) distance covered (c) differences in velocities (d) difference in accelerations

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A particle moves along a straight line path. After sometime it comes to rest. The motion is with an acceleration whose direction with respect to the direction o velocity is (a) positive throughout motion (b) negative throughout motion (c) first positive then negative (d) first negative then positive

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a particle moves with uniform velocity. Which o fthe following statements about the motion of the particle is true. (a) its speed is zero. (b) its acceleration is zero. © its acceleration is opposite to the velocity. (d) its speed may be variable

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A particle is moving on a straight line path with constant acceleration directed along the direction of instantaneous velocity. Which of the following statements about the motion of particle is true. (a) Particle may reverse the direction of motion. (b) distance covered = magnitude of displacement (c) average velocity is less than average speed (d) average velocity = instantaneous velocity.

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the velocity graph of a motion starting from rest with uniform acceleration is a straight line: (a) Parallel to time –axis. (b) parallel to velocity axis © not passing through origin (d) having none of the above characteristics.

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A particle moving with uniform speed can possess :  (a) radial acceleration (b) tangential acceleration © both radial and tangential accelerations (d) neither radial nor tangential acceleration

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For motion on a curved path with constant acceleration [magnitude of displacement /distance covered (a) >1 (b) ≥ 1 (c) ≤ 1 (d) <1

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