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Answer in True/False.
i) High power motors cannot be designed for lower voltages.
ii) In fixed gear system, design of motor is very important.
iii) Efficiency in variable gear system is high
The capacity of lead acid cell is measured in
Match the Following:
The direction of speed of BLDC motor can be changed by
Storage batteries are rated according to
Moment of inertia of a wheel is 1000 kgm2 . At a given instant, its angular velocity is 10 rad/sec. After the wheel rotates through an angle of 100 radians, the angular velocity of the wheel is 100 rad/sec. The torque applied on wheel in Nm is
Due to low inertia, BLDC motors have
Consider a DC motor with armature voltage = 125 V and armature resistance = 0.4 ohm. It is running at 1800 rpm under no load condition. The rated armature current is 30 A. Calculate the rated speed of the motor
If the wheel diameter, gear ratio and speed of the vehicle are all doubled, what will be its effect on the rpm of the electric motor? Choose the correct option
When force and displacement are in the same direction, the kinetic energy of the body ___________?
Explanation: When force and displacement are in the same direction, the kinetic energy of the body increases. The increase in kinetic energy is equal to the work done on the body.
Explanation: When force and displacement are in the same direction, the kinetic energy of the body increases. The increase in kinetic energy is equal to the work done on the body.
When we steer a bicycle round a bend with both our hands on the handlebars, we apply?
Explanation: A pair of equal and opposite forces acting on a body along two different lines of action constitutes a couple. A Couple has a turning effect, but no resultant force acts on a body. When we steer a bicycle round a bend with both our hands on the handlebars, we add a couple.
Explanation: A pair of equal and opposite forces acting on a body along two different lines of action constitutes a couple. A Couple has a turning effect, but no resultant force acts on a body. When we steer a bicycle round a bend with both our hands on the handlebars, we add a couple.
Which of the following is also known as the law of inertia?
Explanation: According to Newton’s first law of motion, everybody continues in its state of rest or uniform motion unless an external force acts upon it. This inability of a body to change its state of rest or of uniform motion along a straight path is called inertia of a body. Hence the first law of motion is also called a law of inertia.
Explanation: According to Newton’s first law of motion, everybody continues in its state of rest or uniform motion unless an external force acts upon it. This inability of a body to change its state of rest or of uniform motion along a straight path is called inertia of a body. Hence the first law of motion is also called a law of inertia.
When a spring is compressed or stretched, the potential energy of the spring?
Explanation: The potential energy of a spring increases when it is compressed or stretched because work is done on it when it is compressed or stretched.
Explanation: The potential energy of a spring increases when it is compressed or stretched because work is done on it when it is compressed or stretched.
What happens to the potential energy when one proton and one electron are brought close together?
Explanation: The potential energy gets decreased when a proton and an electron are brought close because the work is done by the force of attraction between them.
Explanation: The potential energy gets decreased when a proton and an electron are brought close because the work is done by the force of attraction between them.
What sort of energy does flying bird possess?
Explanation: A flying bird possesses both kinetic and potential energies because it is at a certain height above the ground and moving with a certain velocity.
Explanation: A flying bird possesses both kinetic and potential energies because it is at a certain height above the ground and moving with a certain velocity.
The scientific principle that makes hydraulic systems possible is
Pascal’s principle is the basis of hydraulic system which states that the water exerts pressure in all direction.
Pascal’s principle is the basis of hydraulic system which states that the water exerts pressure in all direction.
Magnetic lines of force of a bar magnet do not intersect because
A point always has a single net magnetic field
A point always has a single net magnetic field
The magnetism of a magnet is due to
Spin motion of electrons
Spin motion of electrons
What does the muffler do?
What is the purpose of this?
What Is this?
What Does this Do?
What Is this ?
Identify This
What is the purpose of this?
A radiator is a type of heat exchanger. It is designed to transfer heat from the hot coolant that flows through it to the air blown through it by the fan.
A radiator is a type of heat exchanger. It is designed to transfer heat from the hot coolant that flows through it to the air blown through it by the fan.
Identify this object? it is found in front of the engine.
What recharges the battery while your car is running?
The battery is charged by an alternator on modern cars, or by a dynamo on earlier ones. Both are types of generator, and are driven by a belt from the engine .
The Hybrid Electric Vehicle consists of :
Which of the following is NOT the type of Hybrid Vehicle?
What affect do petrol and diesel engines have on the environment? Click on the correct statement
By what name are traditionally powered vehicles, equipped with a start-stop system, sometimes also known?
Which vehicle uses a high-voltage battery?
Which of the following vehicles produces zero emissions?
Which vehicle has the smallest number of principle components?
What is meant by the term regeneration?
What makes the risk of an electric shock from a high-voltage battery possibly more dangerous than that from an AC circuit?
What voltage is likely to be available from the battery of an electric vehicle or hybrid?
In an electric car, the accelerator pedal hooks to a pair of these to relay the information to the controller about how much power it should deliver.
The accelerator pedal hooks to a pair of potentiometers (variable resistors), and these potentiometers provide the signal that tells the controller how much power it is supposed to deliver. The controller can deliver zero power (when the car is stopped), full power (when the driver floors the accelerator pedal), or any power level in between.
The accelerator pedal hooks to a pair of potentiometers (variable resistors), and these potentiometers provide the signal that tells the controller how much power it is supposed to deliver. The controller can deliver zero power (when the car is stopped), full power (when the driver floors the accelerator pedal), or any power level in between.
How does running a car air conditioner on “max” affect fuel economy?
Running any electrical accessory reduces fuel economy, having the air conditioner on the maximum setting can cut efficiency 5 to 25 percent, according to the U.S. Department of Energy.
Running any electrical accessory reduces fuel economy, having the air conditioner on the maximum setting can cut efficiency 5 to 25 percent, according to the U.S. Department of Energy.
When force and displacement are in the same direction, the kinetic energy of the body ___________?
Explanation: When force and displacement are in the same direction, the kinetic energy of the body increases. The increase in kinetic energy is equal to the work done on the body.
Explanation: When force and displacement are in the same direction, the kinetic energy of the body increases. The increase in kinetic energy is equal to the work done on the body.
When we steer a bicycle round a bend with both our hands on the handlebars, we apply?
Explanation: A pair of equal and opposite forces acting on a body along two different lines of action constitutes a couple. A Couple has a turning effect, but no resultant force acts on a body. When we steer a bicycle round a bend with both our hands on the handlebars, we add a couple.
Explanation: A pair of equal and opposite forces acting on a body along two different lines of action constitutes a couple. A Couple has a turning effect, but no resultant force acts on a body. When we steer a bicycle round a bend with both our hands on the handlebars, we add a couple.
Which of the following is also known as the law of inertia?
Explanation: According to Newton’s first law of motion, everybody continues in its state of rest or uniform motion unless an external force acts upon it. This inability of a body to change its state of rest or of uniform motion along a straight path is called inertia of a body. Hence the first law of motion is also called a law of inertia.
Explanation: According to Newton’s first law of motion, everybody continues in its state of rest or uniform motion unless an external force acts upon it. This inability of a body to change its state of rest or of uniform motion along a straight path is called inertia of a body. Hence the first law of motion is also called a law of inertia.
When a spring is compressed or stretched, the potential energy of the spring?
Explanation: The potential energy of a spring increases when it is compressed or stretched because work is done on it when it is compressed or stretched.
Explanation: The potential energy of a spring increases when it is compressed or stretched because work is done on it when it is compressed or stretched.
What happens to the potential energy when one proton and one electron are brought close together?
Explanation: The potential energy gets decreased when a proton and an electron are brought close because the work is done by the force of attraction between them.
Explanation: The potential energy gets decreased when a proton and an electron are brought close because the work is done by the force of attraction between them.
Frenchmen Gustave Truave developed first Electric Vehicle in the year
