Q:

Rectifiers convert _____.

A) high voltage to low voltage	B) low voltage to high voltage
C) AC to DC	D) DC to AC

Answer & Explanation Answer: C) AC to DC

Explanation:

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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

Sunspots appear dark because they are

A) hotter than the rest of the Sun's surface.	B) more magnetic than the rest of the Sun's surface.
C) cooler than the rest of the Sun's surface.	D) None of the above

Answer & Explanation Answer: C) cooler than the rest of the Sun's surface.

Explanation:

Sunspots are a magnetic phenomenon on the Sun.

The reason a sunspot appears dark is that they are cooler than the rest of the Sun's surface and also the gas inside the spot where the magnetic field is strongest is only emitting about 1/4 as much light as from the rest of the solar surface.

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Filed Under: Physics
Exam Prep: Bank Exams , CAT

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Q:

The radius of curvature of a concave mirror is 30 cm. Following Cartesian Sign Convention, its focal length is expressed as

A) -30 cm	B) -15 cm
C) +30 cm	D) +15 cm

Answer & Explanation Answer: B) -15 cm

Explanation:

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Q:

Under which Article of Indian Constitution an emergency can be declared on the grounds of failure of constitutional machinery in the states?

A) Article 350	B) Article 352
C) Article 356	D) Article 368

Answer & Explanation Answer: C) Article 356

Explanation:

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Filed Under: Indian Politics
Exam Prep: Bank Exams

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Q:

Who among the following did Gandhiji regard as his political Guru?

A) Mahadev Desai	B) Dayanand Saraswati
C) Acharya Narendra Dev	D) Gopal Krishna Gokhale

Answer & Explanation Answer: D) Gopal Krishna Gokhale

Explanation:

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Filed Under: Honours and Awards

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Q:

Who was the winner of 2017 Australian Grand Prix?

A) Sebastian Vettel	B) Lewis Hamilton
C) Valtteri Bottas	D) Kimi Raikkonen

Answer & Explanation Answer: A) Sebastian Vettel

Explanation:

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Q:

A person lent certain sum of money at 5% per annum simple interest and in 15 years the interest amounted to Rs 250 less than the sum lent. What was thesum lent (in Rs)?

A) 1000	B) 1500
C) 2400	D) 3000

Answer & Explanation Answer: A) 1000

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability
Exam Prep: Bank Exams

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Q:

If $X^{2} + 4 y^{2} + z^{2} - 4 x - 2 z + 5 - 0, then find the value of \frac{y^{15} + x^{5}}{z^{14}}$

A) 32	B) 46
C) 58	D) 60

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