Which of the following pairs does not have identical dimensions ?

A. Torque and energy
B. Momentum and impulse
C. Energy and work
D. Mass and moment of inertia

It is easier to turn a steering wheel with both hands than with a single hand because______________?

A. Accelerating force increases on the wheel
B. Two forces act on the wheel
C. Two hands provide a firm grip
D. The couple acts on the wheel

The cross product i^ x j^ is equal to_______________?

A. Zero
B. One
C. I^
D. K^

The unit vector in the direction of vector A = 2 i^ -2j^ + k^ is_______________?

A. 2i^ – 2j^ + k^
B. (2i^ – 2j^ +k^)/9
C. (2i^ – 2j^ +k^)/3
D. (2i^ – 2j^ +k^)/5

Addition of vector obeys_____________?

A. Commutative law
B. Distributive law
C. Associative law
D. All given laws in a, b and c

The direction of a vector in space is specified by_______________?

A. One angle
B. Two angle
C. Three angle
D. No angle

A vector can be multiplied by a number. The number may be_______________?

A. Dimensionless
B. Dimensional scalar
C. Negative
D. All a, b and c are correct

Unit vector n^ is along______________?

A. X-axis
B. Normal on a surface
C. Y-axis
D. Z-axis

The rectangular coordinate system is also called______________?

A. Polar coordinate system
B. Cartesian coordinate system
C. Cylindrical coordinate system
D. Spherical coordinate system

Maximum number of rectangular components are_____________?

A. 1
B. 2
C. 3
D. 4