362
Q:

# The working principle of a washing machine is

 A) reverse osmosis B) diffusion C) centrifugation D) dialysis

Explanation:

The working principle of a washing machine is centrifugation. Centrifugation is a separation process which uses the action of centrifugal force to promote accelerated settling of particles in a solid-liquid mixture.

The washing machine consists of centrifuge for this purpose. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis, applying a force perpendicular to the axis of spin that can be very strong.

Subject: Physics
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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Q:

 A) Capacitance B) Reactance C) Electric charge D) Electric conductance

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 0
Q:

Instrument for measuring blueness of the sky or ocean is called ___________.

 A) Bathymeter B) Ceraunograph C) Cyanometer D) Barometer

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 0
Q:

If demand curve for alphonso mangoes is D = 25000 ­ 70P and supply curve is S = 10000 + 80P, find the equilibrium quantity?

 A) 18,000 units B) 2,000 units C) 1,800 units D) 200 units

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 0
Q:

The property of metal by which it can be drawn into wires is called _____________.

 A) maleability B) viscosity C) ductility D) tensile strength

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 13
Q:

The force of friction between two surfaces will increase if:

 A) a layer of lubricant is kept between the two surfaces B) the two surfaces are pressed harder C) air gap is created between the two surfaces D) irregularities on both the surfaces are removed

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

0 12
Q:

Contact force is another name for _________.

 A) Friction B) Magnetic force C) Electrostatic force D) Muscular force

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

1 14
Q:

Air moves from the region where the air _____________________________.

 A) humidity is high to the region where the humidity is low B) pressure is low to the region where the pressure is high C) pressure is high to the region where the pressure is low D) humidity is low to the region where the humidity is high

Answer & Explanation Answer: C) pressure is high to the region where the pressure is low

Explanation:

Filed Under: Physics
Exam Prep: Bank Exams

1 5
Q:

In _____________ motion of a body its velocity varies with time.

 A) uniform B) linear C) equilibrium D) non-uniform