GATE Questions

Q:

What is Latus Rectum of Parabola?

A) line segment B) vertex
C) focus D) major axis
 
Answer & Explanation Answer: A) line segment

Explanation:

As parabola is a locus of a point, which moves so that its distance from focus and directrix is always equal.

 

The latus rectum of a conic section is the chord (line segment) that passes through the focus, is perpendicular to the major axis and has both endpoints on the curve. The length of the latus rectum is determined differently for each conic.

                                      download1522126663.jpg image

 

The length of a parabola's latus rectum is 4p, where p is the distance from the focus to the vertex.

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Filed Under: Analytical Reasoning
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Q:

What type of mirror is used in car headlights?

A) Concave B) convex
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) Concave

Explanation:

Concave type of glasses are used in the headlights of the vehicles as the light from the bulb which is at focus will converges out and spreads and reflects back parallely.

 

What_type_of_mirror_is_used_in_car_headlights1535545831.jpg image

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Filed Under: General Science
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6 3786
Q:

In which year was the Supreme Court of India established?

A) 1951 B) 1949
C) 1950 D) 1947
 
Answer & Explanation Answer: C) 1950

Explanation:

The Supreme Court of India was established in the year 1950.

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22 3786
Q:

Electrical Pressure is also called

A) Current B) Voltage
C) Resistance D) Power
 
Answer & Explanation Answer: B) Voltage

Explanation:

Electrical Pressure is also called as Voltage. Voltage is measured in Volts.

 

Volt : A unit of electrical pressure or Voltage is called Volt.

 

One volt is the amount of pressure required to cause one ampere of current to flow against one ohm of resistance.

 

Voltage is also referred to as Electromotive Force or Electrical Potential or Electrical Pressure.

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Filed Under: Physics
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9 3784
Q:

Dot cabs company provides cabs for software employees. The company has 8 Swift dzires, 6 Scorpios, 7 Innovas and few small cars. If Swift dzire makes one fourth of the total fleet, how many small cars are there in the company ?

A) 9 B) 10
C) 11 D) 12
 
Answer & Explanation Answer: C) 11

Explanation:

Given the company has 8 SD + 6 SRP + 7 IN = 21 cars + 'x' small cars.
Given SD makes 1/4 th of the total fleet.
=> 8 = 1/4 (21 + x)
=> 32 = 21 + x
=> x = 11
Therefore, the company has 11 small cars.

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3 3781
Q:

Slip rings are usually made of

A) Aluminium B) Copper
C) Phosphor Bronze D) Carbon
 
Answer & Explanation Answer: C) Phosphor Bronze

Explanation:

A Slip ring is a ring in a dynamo or electric motor which is attached to and rotates with the shaft, passing an electric current to a circuit via a fixed brush pressing against it.

 

Slip rings are usually made of Phosphor Bronze.

 

Slip ring motors usually have a 'phase-wound' rotor. This type of rotor has a 3-phase, double-layer, distributed winding consisting of coils used in alternators. The rotor core is made up of steel laminations which have slots to accommodate formed 3-single phase windings.

slip_rings_are_usually_made_of1535005379.png image

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3 3779
Q:

Walking at a speed of 10 km/hr, Madhu reaches her university 15 minutes late. Next time she increases her speed by 2 km/hr, but she is still late by 5 minutes. The distance of the university from her house is:

A) 15 km B) 30 km
C) 20 km D) 10 km
 
Answer & Explanation Answer: D) 10 km

Explanation:
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Filed Under: Time and Distance
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Q:

India's longest cable-bridge inaugurated by PM Modi in which state ?

A) Assam B) Telangana
C) Gujarat D) Karnataka
 
Answer & Explanation Answer: C) Gujarat

Explanation:

PM Modi Inaugurated India's Longest Cable Bridge in Gujarat, a four-lane bridge over the river Narmada in Bharuch. The bridge is 1344 metres long and 22.8 metres wide. It is built by Larsen and Turbo as a part of the Rs. 379 crore project of the National Highway Authority of India.

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Filed Under: Longest, Shortest, Deepest
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