POLYCET (2022) - 11
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మీకు ఏవైనా కీ లోపాలు దొరికితే లోపాలు మాకు తెలియజేయడానికి వెనుకాడవద్దు.
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If a vertical pole of length 6 m casts a shadow 4 m long on the ground and at the same time a tower casts a shadow 28 m long . then the height of the tower is
a. 21 m
b. 42 m
c. 13 m
d. 9 m
If in a triangle ABC , A and B are complementary then the C is
( sec A + tan A )( 1 – sin A ) is
a. Cos A
b. Cosec A
c. Tan A
d. Sec A
Which converts mechanical energy into electrical energy ?
To understand the working of a electric motor we need to understand the behaviour of a ___________kept in a uniform magnetic field
a. Electric fields carrying coil
b. Magnetic fields carrying coil
c. Current carrying coil
d. Magnetic carrying coil
The magnetic lines of force
a. They are straight lines
c. Do not intersect each other
d. Intersects each other
The current in a generator armature is AC. Because
a. The rotation of the armature causes the field through into reverse
b. The current in the field coils in AC
c. The magnetic field reverses at intervals
d. The commutator feeds current into it in opposite directions every half cycle
A magnetic field is a ……….. quantity
In right hand rule , the fore-finger , the middle finger and the thumb finger are ————-to each other.
According to right hand rule , the fore-finger points towards the direction of
In right hand rule , the thumb gives direction of
Dynamo and motors are based on
a. Faraday’s law and Ampere’s force law respectively
b. Ampere’s force law
c. Ampere’s force law and Faraday’s law respectively
d. Faraday’s law
The magnetic field inside a long straight solenoid carrying current ——————
a. Is same at all points
b. Increases as we move towards its end
c. Decreases as we move towards its end
d. Is zero
Macro evolution is
a. The process of species formation
b. The process of genus formation
c. The process of formation of family
d. The process of formation of order
Name of the ship in which Charles Darwin voyaged
a. HMS eagle
b. HMS beagle
c. HBS beagle
The following thing leads to variations in offsprings in a population
a. Sexual reproduction
b. Errors in DNA copying
c. Both Sexual reproduction & Errors in DNA copying
d. DNA copying
Appendix is the vestigial organ in human being but useful for
Mendal experiment stands for
In male human beings , all the chromosomes are paired perfectly except one that is
a. X chromosome
b. Y chromosome
c. Small chromosome
d. Both X chromosome & Y chromosome
Who concluded that natural selection contributed to arising of new species
a. Alfred Russel Wallace
b. August Weismann
Identify the phenotype ratio of di-hybrid cross
Phenotype ratio of monohybrid cross is
Elongation of neck and forelimbs in Giraffe is an example for
a. Survival of the fittest
b. Natural selection
c. Inheritance of acquired characters