Explore topic-wise MCQs in Current Affairs.

This section includes 58536 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.

14651.

Which of the following is the correct expression for the maximum thermal efficiency (η) of a system undergoing a reversible power cycle while operating between thermal reservoirs at temperatures Tc and Th

A. η = Tc/Th
B. η = Th/Tc -1
C. η = 1-Tc/Th
D. η = 1
Answer» D. η = 1
14652.

Rearrange the parts of the sentence in correct order.The art of letter-writing isP: something that every educated personQ: must acquire for practical purposesR: not merely an ornamental accomplishment, but

A. PRQ
B. QRP
C. RPQ
D. RQP
Answer» D. RQP
14653.

The volume of a cube is 343 cm3. The edge of cube is:

A. 7 cm
B. 6 cm
C. 5 cm
D. 4 cm
Answer» B. 6 cm
14654.

Select the most appropriate option to substitute the underlined segment in the given sentence. If there is no need to substitute it, select ‘No substitution required’.Our new accountant falls short in my expectations.

A. No substitution required
B. falls short of
C. falls short from
D. fall short on
Answer» C. falls short from
14655.

What alphanumeric character will follow in the given series:2K, 5L, 10N, 17Q, ?

A. 28U
B. 20S
C. 18K
D. 25M
Answer» B. 20S
14656.

The difference between indicated power and brake power is:

A. absolute power
B. engine friction loss
C. engine power
D. engine accumulated power
Answer» C. engine power
14657.

The Indian Railways has claimed that zero passenger death was witnessed in the current financial year, that is, 2019-20. This is for the first time in how many years long history of railways?

A. 100
B. 126
C. 148
D. 166
E. 172
Answer» E. 172
14658.

Select the option that is related to the third term in the same way as the second term is related to the first term.Car : Wheel :: Clock : ?

A. Circular
B. Hour
C. Second
D. Needle
Answer» E.
14659.

Slow plastic deformation of a material under constant stress is:

A. Proof deformation
B. Creep
C. Fatigue
D. Gradual deformation
Answer» C. Fatigue
14660.

Which of the following statements is true?A. All rural people are post graduates.B. Some POs are software workers but not rural people.C. All software employees are POs.D. Some rural people are not post graduates.

A. B
B. D
C. C
D. A
Answer» C. C
14661.

Which of the following is the SI unit of temperature?

A. Ampere
B. Réaumur scale
C. Candela
D. Kelvin
Answer» E.
14662.

\(\rm\int_0^\pi x\ f(\sin x)\ dx\) is equal to:

A. \(\rm \pi \int_0^{\pi/2}f (\sin x)\ dx\)
B. \(\rm \frac{\pi}{2} \int_0^{\pi/2}f (\sin x)\ dx\)
C. \(\rm \pi \int_0^{\pi/2}f (\cos x)\ dx\)
D. \(\rm \frac{\pi}{2} \int_0^{\pi}f (\cos x)\ dx\)
Answer» B. \(\rm \frac{\pi}{2} \int_0^{\pi/2}f (\sin x)\ dx\)
14663.

Which of the following is NOT true for a rectifier?

A. The working of a half wave rectifier takes advantage of the fact that diodes allow current flow in multiple directions.
B. Half wave rectifiers use one diode, while a full wave rectifier uses multiple diodes.
C. A rectifier can consist of a single diode or a group of diodes.
D. A rectifier is a device that converts alternating current (AC) to direct current (DC).
Answer» B. Half wave rectifiers use one diode, while a full wave rectifier uses multiple diodes.
14664.

When gain K of the open-loop transfer function of order greater than unity is varied from zero to infinity, the closed-loop system

A. may become unstable
B. stability may improve
C. stability may not be affected
D. will become highly stable
Answer» B. stability may improve
14665.

Three 60 W bulbs are in parallel across the 230 V power line. If one bulb burns out

A. there will be heavy current in the main line
B. rest of the two bulbs will not light
C. all three bulbs will not light
D. the other two bulbs will remain glowing
Answer» E.
14666.

The following question consists of a sentence with an underlined word/words followed by four words. Select the option that is opposite in meaning to the underlined word/words and mark your response accordingly.I would beg of all friends not to rush to Birla house nor try to dissuade me or be anxious about me.

A. Certain
B. Composed
C. Careless
D. Heedless
Answer» C. Careless
14667.

Where is the headquarters of Indian Institute of Petroleum?

A. Mumbai
B. Bhopal
C. Lucknow
D. Chandigarh
E. Dehradun
Answer» F.
14668.

The process of augmenting the same type of skills from that were to begin with is called: Choose the correct response from he options below:

A. Unexpected learning
B. Discontinuous learning
C. Expected learning
D. Continuous learning
Answer» E.
14669.

The title 'Pandit' was given to the following lady

A. Lakshmi Bai
B. Rama Bai
C. Sita Bai
D. Jijiya Bai
Answer» C. Sita Bai
14670.

The Koppen’s classification of climate "BWh" stands for:

A. Cold mid-latitude deserts
B. Hot low-latitude desert
C. Monsoon climate
D. Savanna grasslands
Answer» C. Monsoon climate
14671.

The water pollution in a river is measured by the dissolved quantity of -

A. Chlorine
B. Ozone
C. Nitrogen
D. Oxygen
Answer» E.
14672.

The selling price of one article after allowing a discount of 15% on its cost price, is the same as the selling price of another article after allowing a discount of 25% on its cost price. If the sum of the cost prices of both the articles is Rs. 640, then find the selling price of each article.

A. Rs. 250
B. Rs. 255
C. Rs. 280
D. Rs. 340
Answer» C. Rs. 280
14673.

The overall transfer function of a control system is given by the following equation. Find out the value of Derivative rate feedback constant Kt. (Consider the Damping ratio 0.9)\(\dfrac{C(s)}{R(s)}= \dfrac{36}{s^2+3.6s+36}\)

A. 1
B. 0.16
C. 0.2
D. 0.707
Answer» D. 0.707
14674.

The Delhi Metro Rail Corporation (DMRC) will get its first batch of how many electric buses (e-buses) for the feeder service by April 2021?

A. 30
B. 40
C. 50
D. 60
E. 70
Answer» D. 60
14675.

Which among the following is incorrect with respect to Payment Banks and Small Finance Banks in India?

A. Payments Banks can accept deposits but have to keep the customer balance below one lakh rupees, whereas there is no such restriction on the Small Finance Banks.
B. Payments Banks cannot give loans or issue credit cards whereas Small Finance Banks can.
C. Mobile Companies and Supermarket Chains owned and controlled by residents are allowed to become eligible promoters for Payments Banks but this is not true for Small Finance Banks.
D. Payments Banks cannot sell mutual funds, insurance and pension funds but Small Finance Banks can.
Answer» E.
14676.

The human skeleton consists of:

A. 126 bones
B. 200 bones
C. 206 bones
D. 220 bones
Answer» D. 220 bones
14677.

Select the letter will replace the question mark (?) in the following series.C, B, B, C, Z, E, W, H, S, ?, N

A. K
B. P
C. I
D. L
Answer» E.
14678.

Which of the following rhythm instruments is used in the Swang folk-dance?

A. Mridang
B. Dafli
C. Tabla
D. Khol
Answer» B. Dafli
14679.

Which of the following modulation scheme requires minimum power for transmission?

A. QPSK
B. 8-PSK
C. 16-QAM
D. 64-QAM
Answer» B. 8-PSK
14680.

Which bio agent is used in making fertilisers?

A. Blue green algae
B. Earthworms
C. Cow dung
D. Manure
Answer» B. Earthworms
14681.

Which of the following statements is not true in the context of the passage?

A. Access to learning opportunities has increased.
B. In medieval times too, many had access to educational opportunities.
C. Technology has expanded access to education.
D. Massive amounts of information is available to individuals at their fingertips.
Answer» C. Technology has expanded access to education.
14682.

Which of the following has announced that it will acquire Payments Technology Services Ltd (PTSL) for USD 9 million?

A. Infosys
B. Tech Mahindra
C. IBM
D. Wipro
E. TCS
Answer» C. IBM
14683.

Water borne diseases can be prevented by which one of the following suggestions?

A. By holding a hand kerchief near the mouth while coughing.
B. By providing safe drinking water.
C. By preventing exposure to overcrowded places.
D. By preventing mosquito breeding in the neighbourhood.
Answer» C. By preventing exposure to overcrowded places.
14684.

The compound that is not a common compound of photochemical smog is

A. CF2 Cl2
B. CH2=CHCHO
C. O3
Answer» B. CH2=CHCHO
14685.

The question below consists of a set of labelled sentences. These sentences, when properly sequenced form a coherent paragraph. Select the most logical order of sentences from among the options. P: One lakh rupees invested in Bitcoin in 2010 would be worth a few hundred crore rupees today. Q: In fact, all it took for the currency to reach $11,000 after breaching the $10,000 mark was a single day. R: In 2017 alone, Bitcoin price has increased by over 1000%. S: That is the kind of extraordinary return the digital currency has given to investors as its price has witnessed a meteoric rise, from just a few cents in 2010 to hit a lifetime high of over $11,000 last week.

A. PSRQ
B. QRSP
C. SPQR
D. QPRS
Answer» B. QRSP
14686.

The birth anniversary of ________ is celebrated as 'International Nurses Day' every year.

A. Mother Teresa
B. Clara Barton
C. Alice Walker
D. Florence Nightingale
Answer» E.
14687.

Subsystem A requires two voltages V1 and V2 with equal power ratings. Power conversion scheme adapted for the power supply design is shown in the following figure. What is the overall power conversion efficiency?

A. \(\frac{{(1.(2}}{{(1 + (2}}\)
B. η
C. \(\frac{{2(1*(2}}{{1 + (2}}\)
D. \(\frac{{2(1*(2}}{{1 \div (1}}\)
Answer» D. \(\frac{{2(1*(2}}{{1 \div (1}}\)
14688.

In order to maintain the desired shape of the tunnel, the cross-section of the tunnel must be checked at a regular interval of

A. 2 - 3 m
B. 4 - 5 m
C. 7 - 9 m
D. 10 - 12 m
Answer» B. 4 - 5 m
14689.

\({\rm{f''}}\left( { - \frac{2}{3}} \right)\) is equal to

A. -1
B. \(\frac{1}{3}\)
C. \(\frac{1}{2}\)
D. 1
Answer» E.
14690.

The particles that are indistingishable and obey both Heisenberg's uncertainty principle and Pauli's exclusion principle obey

A. Fermi-Dirac statistics
B. Bose-Einstein statistics
C. Maxwell Boltzmann distribution
D. Sigmund distribution
Answer» B. Bose-Einstein statistics
14691.

Where did the nationalist vocalist Pandit Vishnu Digambar Paluskar establish his first Gandharva Mahavidyalaya in 1901 ?

A. Karachi
B. Bombay
C. Baroda
D. Lahore
Answer» E.
14692.

When did the Constituent Assembly meet for the first time?

A. 9 December, 1946
B. 26 January, 1950
C. 26 November, 1949
D. 15 August, 1947
Answer» B. 26 January, 1950
14693.

Select the correct meaning of the idiom underlined below:There's no love lost between them.

A. Avoid
B. Not on good terms
C. Challenge
D. Quarrel
Answer» C. Challenge
14694.

Which of the following has been announced as the host venue for the Indian Super League (ISL) season six finale ​by the Football Sports Development Limited (FSDL)?

A. Goa
B. Maharashtra
C. Punjab
D. Karnataka
E. Jharkhand
Answer» B. Maharashtra
14695.

The kVA rating of an ordinary 2-winding transformer is increased when connected as an autotransformer is due to

A. Transformation ratio is increased
B. Secondary voltage is increased
C. Energy is transferred both inductively and conductively
D. Energy is transferred inductively
Answer» D. Energy is transferred inductively
14696.

The work done by a system is 45 kJ. If the internal energy of the system is decreased by 15 kJ. What is the heat received (in kJ) by the system?

A. -60
B. -30
C. 30
D. 60
Answer» D. 60
14697.

(State-CM) Identify the odd pair?

A. UP - Yogi Adityanath
B. Manipur - Birensingh
C. Punjab - Amarinder Singh
D. Uttaranchal - Bipin Khanduri
Answer» E.
14698.

Seven friends O, P, Q, R, S, T and U are watching a movie sitting in a row. S is sitting at one extreme end. Q is sitting second to the right of S. P is sitting between O and Q. U is not sitting at any extreme end. O is not at any extreme end. R is sitting immediate left of T. Who is sitting in the middle?

A. R
B. Q
C. P
D. U
Answer» D. U
14699.

The remainder when 5x5 - 15x4 + 10x3 + 2x2 - 6x + 9 is divided by x - is ____.

A. 9
B. 7
C. 5
D. 3
Answer» B. 7
14700.

The elements belonging to groups ______ are known as ‘d’ block elements.

A. 3 to 12
B. 1 and 2
C. 13 to 18
D. 3 to 10
Answer» B. 1 and 2