Exams Questions and Answers

Q:

If each median of an equilateral triangle has a length of 12cm. Then what will be the value of in-radius (in cm) of the equilateral triangle?

A) 3	B) 4
C) 5	D) 6

Answer & Explanation Answer: B) 4

Explanation:

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Q:

A train, starting from rest, attains a velocity of 90 kmph in 5 minutes. Assuming that the acceration is uniform, the distance travelled by the train during this time is

A) 1.5 km	B) 2.25 km
C) 3.75 km	D) 3.25 km

Answer & Explanation Answer: C) 3.75 km

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Q:

Which compressor is usually used in AC?

A) Centrifugal	B) Rotary
C) Reciprocating	D) Axial

Answer & Explanation Answer: C) Reciprocating

Explanation:

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. The capacity of the air conditioning depends entirely on the capacity of the compressor. The reciprocating compressor is usually used in AC.

Which_compressor_is_usually_used_in_AC1559283550.jpg image

The reciprocating compressor have piston and cylinder arrangement like the automotive engine. The reciprocating motion of the piston due to external power compresses the refrigerant inside the cylinder.

There are three types of reciprocating compressors:

hermetically sealed,

semi-hermetically sealed and

open type.

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Q:

In a class of 50 students there are 22 girls who scored an average of 35 marks in the test. What is the average marks of the boys if the class average is 42 marks?

A) 50	B) 52.5
C) 47.5	D) 55

Answer & Explanation Answer: C) 47.5

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Q:

What is the value of {(sin 4x + sin 4y) [(tan 2x – 2y)]}/(sin 4x – sin 4y)?

A) tan 2 (2x + 2y)	B) tan2
C) cot (x – y)	D) tan (2x + 2y)

Answer & Explanation Answer: D) tan (2x + 2y)

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Q:

In which year , the distribution of Bharat Ratna award started?

A) 1954	B) 1956
C) 1952	D) 1950

Answer & Explanation Answer: A) 1954

Explanation:

The Bharat Ratna is the highest civilian award of the Republic of India. Instituted in 1954, the award is conferred "in recognition of exceptional service/performance of the highest order", without distinction of race, occupation, position, or sex.

bharat_ratna1532341432.jpg image

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Q:

If x(2x + 3) = 90 and $7 y^{- 1 / 2} + 2 y^{- 1 / 2} = y^{1 / 2}$ (x and y are positive numbers), then what is the value of $x^{2} + y^{2}$ ?

A) 45	B) 109
C) 117	D) 126

Answer & Explanation Answer: C) 117

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Q:

Select the related letters from the given alternatives.
WUS : DFH :: MKI : ?

A) LJH	B) GEC
C) OQS	D) NPR

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