Q:

A potentiometer wire is 100 cm long and a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obtained at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of the emf's is :

A) 3:4	B) 5:4
C) 5:1	D) 3:2

Answer & Explanation Answer: D) 3:2

Explanation:

In series : E1 + E2 = K(50)

In parallel : E1 - E2 = K(10)

E1 + E2 / E1 - E2 = 5/1

=> E1/E2 = 3/2

The emf's are in the ratio of 3:2.

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Filed Under: Physics
Exam Prep: AIEEE

40 11041

Q:

Which city is known as "City of Blood" in India ?

A) Jaisalmar	B) Jodhpur
C) Yavatmal	D) Tezpur

Answer & Explanation Answer: D) Tezpur

Explanation:

Tezpur is the city in the state of Assam is known as City of Blood.

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Filed Under: Famous Places
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

29 11038

Q:

If a carrier wave of 1000 kHz is used to carry the signal, the length of transmitting antenna will be equal to _____ ?

A) 300 m	B) 30 m
C) 3 m	D) 0.3 m

Answer & Explanation Answer: A) 300 m

Explanation:

h = $straight c over straight v$ = 3 × 10⁸/10⁶ = 300 m

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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk

39 11036

Q:

The metal which reacts most violently with with cold water is

A) calcium	B) sodium
C) magnesium	D) potassium

Answer & Explanation Answer: D) potassium

Explanation:

Potassium reacts violently with water liberating hydrogen. The reaction is so violent that the liberated hydrogen catches fire.

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Filed Under: Chemistry

47 11036

Q:

Simla is cooler than Amritsar although they are on the same latitude. This is because

A) Simla is further north	B) Simla is at greater height above sea level than Amritsar
C) Simla is farther from the equator	D) Their longitudes differ

Answer & Explanation Answer: B) Simla is at greater height above sea level than Amritsar

Explanation:

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Filed Under: World Geography

26 11035

Q:

Why ABC computer is called so ?

A) Because it was thought to be the first computer so named with first alphabets of English	B) Because it was developed by Atanasoff and Berry
C) Both of above are the reason to name the computer ABC	D) None of the above

Answer & Explanation Answer: A) Because it was thought to be the first computer so named with first alphabets of English

Explanation:

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Filed Under: Computer
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

11 11032

Q:

Improve the bracketed part of the sentence.

According to an official spokesperson, polling was held amid tight security arrangements in 29 municipal councils and panchayats (over the State).

A) besides the State	B) behind the State
C) across the State	D) No improvement

Answer & Explanation Answer: C) across the State

Explanation:

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Filed Under: English
Exam Prep: Bank Exams

0 11026

Q:

The first hand glider was designed by…?

A) Leonardo DaVinci	B) The Wright brothers
C) Francis Rogallo	D) Galileo

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