Description : Noise level heard at a distance of about 100 metres from a jet engine with after burner is about __________ decibels. (A) 120 (B) 140 (C) 170 (D) 200
Last Answer : (C) 170
Description : Noise level heard inside a bus in busy city traffic or inside a sub-way train corresponds to about __________ decibels. (A) 75 (B) 95 (C) 120 (D) 140
Last Answer : (B) 95
Description : Shouting by a man at his full voice corresponds to a voice level of about __________ decibels. (A) 25 (B) 50 (C) 80 (D) 120
Last Answer : (C) 80
Description : As per international norms, the maximum permissible value of noise level in the industrial environment is __________ decibels as measured at a distance of 1.5 metres from the source of noise. (A) 110 (B) 85 (C) 60 (D) 45
Last Answer : (B) 85
Description : Noise emitted by a ventilation fan at a distance of 3 metres is about __________ decibels. (A) 85 (B) 105 (C) 125 (D) 145
Last Answer : (B) 105
Description : Maximum allowable noise exposure limits for a man working for 8 hours a day in a noisy chemical plant is about __________ decibels. (A) 20 (B) 60 (C) 90 (D) 120
Last Answer : (C) 90
Description : The maximum permissible noise level to which a man working in a chemical plant can be exposed for eight hours per day is about __________ decibels. (A) 60 (B) 90 (C) 105 (D) 120
Last Answer : (B) 90
Description : Noise level audible to audience sitting in the 5th row from the stage during a large orchestra show corresponds to about __________ decibels. (A) 105 (B) 135 (C) 160 (D) 185
Last Answer : (B) 135
Description : ECE Board Exam March 1996 A car horn outdoors produces a sound intensity level of 90 dB at 10 ft away. At this distance, what is the sound power in watt? A. 12 W B. 0.12 W C. 0.012 W D. 1.2 W
Last Answer : C. 0.012 W
Description : Human beings can hear the sound range between: (1) 10 to 20 decibels (2) 100 to 150 decibels (3) 50 to 60 decibels (4) None of the above
Last Answer : (4) None of the above Explanation: The most accepted sound range of human being is 0 to 120 decibels.
Description : . Noise level inside a jet airliner in normal flight is about __________ decibels. (A) 80 (B) 100 (C) 125 (D) 150
Last Answer : (B) 100
Description : What is the intensity of sound in normal conversation? (a) 10-20 dB (b) 30-60 dB (c) 70-90 dB (d) 120-150 dB
Last Answer : b) 30-60 dB
Description : Noise level during normal conversation among men is about __________ decibels. (A) 10 (B) 45 (C) 90 (D) 115
Last Answer : (B) 45
Description : Coating thickness in case of galvanising of steel sheet generally corresponds to the deposition of __________ gms of zinc per m2 of steel strip. (A) 5-10 (B) 1000-1500 (C) 120-500 (D) 1500-3000
Last Answer : Option C
Description : When an automobile is in a tunnel how will the horn sound?
Last Answer : What is the answer ?
Description : The piston of a steam engine moves in S.H.M. The crank rotates at 180 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 1 metre from the centre is a.8.88 m/sec b.16.32 m/sec c.5.88 m/sec d.8.16 m/sec e.Zero
Last Answer : e. Zero
Description : Nesha scored 120 out of 150 in English, 120 out of 180 in mathematics and 160 out of 200 in Science. Find Nesha’s score as percentage: (i) in Mathematics (ii) in all the three subjects (on the whole). a) 66 2/3, 78 22/51 b) 71 23/5, 45 7/31 c) 54 13/33, 82 3/4 d) 60 3/4, 76 32/41
Last Answer : Answer: A (i) Percentage scored in Mathematics = 120/180 100 = 12000/180 =1200/18 = 66 2 /3 % (ii) Total maximum of all the three subjects = 150 + 160 + 200 = 510 and Total score in the ... percentage on the whole = (400/510 100) = (40000/510) = 4000/51 = 78 22/51 %
Description : The life span of RBC of man is - (1) 120 days (2) 150 days (3) 180 days (4) 190 days
Last Answer : (2) 150 days Explanation: The average life span of RBC is about 100-120 days. The old, worn out and dead RBC are destroyed mainly in an organ called spleen.
Description : The blood cholesterol level in 100ml of blood in a normal person varies between (1) 150 and 200 mg (2) 120 and 200 mg (3) 100 and 180 mg (4) 80 and 160 mg
Last Answer : (1) 150 and 200 mg Explanation: Cholesterol is defined as a waxy alcohol, fat-like substance that occurs naturally in all areas of the human body. Cholesterol is measured in milligrams per 100 ... to be normal blood cholesterol; 200-239 mg/dL borderlinehigh; and > 240 mg/dl high cholesterol.
Description : An accurate clock shows 9 o’clock in the morning. Through how many degrees will the hour hand rotate when the clock shows 2 o’clock in the afternoon? a) 120 b) 150 c) 180 d) 360
Last Answer : Answer Key : b
Description : A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train? a) 120 meters b) 180 meters c) 324 meters d) 150 meters
Last Answer : d) 150 meters
Description : The life span of RBC of man is (1) 120 days (2) 150 days (3) 180 days (4) 190 days
Last Answer : 150 days
Description : The average life span of red blood corpuscles is about (1) 100 - 200 days (2) 100 - 120 days (3) 160 - 180 days (4) 150 - 200 days
Last Answer : 100 - 120 days
Description : The blood cholesterol level in 100 ml of blood in a normal person varies between— (1) 150 and 200 mg (2) 120 and 200 mg (3) 100 and 180 mg (4) 80 and 160 mg
Last Answer : 150 and 200 mg
Description : A school has 4 sections of class 12, such that half the number of students of 1st section, 1/3rd of 2nd section, 1/4th of 3rd section and 1/5th of the 4th section are equal. If total number of students in ... find the number of students in sections 1st and 2nd. A) 180 B) 120 C) 240 D) 150 E) 260
Last Answer : Answer: D Let number of students in 4 sections be A, B, C, D respectively. Then 1/2 of A = 1/3 of b = 1/4 of C = 1/5 of D So A : B : C : D = 2 : 3 : 4 : 5 [When A/2 = B/3 = C/4, then ratio A: B : C = 2 : 3 : 4] So students in 1st and 2nd section = [(2+3)/(2+3+4+5)] * 420 = 150
Description : What will be the frequency of a three-phase, six pole, AC generator operating at 1800 revolutions per minute? A. 60 hertz B. 90 hertz C. 120 hertz D. 180 hertz
Last Answer : Answer: B
Description : At resonance the phase angle is equal to A 0 0B 180 0 C 120 0 D 90 0
Last Answer : D 90 0
Description : The angle between spring force and damping force is A 180 0 B 120 0 C 90 0 D 0 0
Last Answer : C 90 0
Description : Revenue from services with duration of not more than……….. days to be recognized when rendering of services under contract is completed or substantially complted. a) 60 days b) 90 days c) 120 days d) 180 days
Last Answer : b) 90 days
Description : The missing number in the series 40, 120, 60, 180, 90, ?, 135 is (A) 110 (B) 270 (C) 105 (D) 210
Description : Two columns 50 cm 50 cm and 60 cm 60 cm carry 80 tonnes and 120 tonnes of loads respectively. The centre to centre distance between columns is 5.00 metres. The permissible bearing capacity of the soil is 20 t ... the foundation slab = 7.00 m (C) Area of footing slab = 11.00 m2 (D) All the above
Last Answer : Option D
Description : The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ----? A. 1120 ft B. 120 ft C. 56 ft (Answer) D. 100 ft E. None of these
Last Answer : C. 56 ft (Answer)
Description : The life span of human erythrocytes is approximately (a) 90 days (b) 100 days (c) 120 days (d) 150 days
Last Answer : Ans:(d)
Description : Normal blood pressure of man is – (1) 80/120 mm Hg (2) 90/140 mm Hg (3) 120/160 mm Hg (4) 85/150 mm Hg
Last Answer : (1) 80/120 mm Hg Explanation: Normal blood pressure is considered to be at or below 120 over 80 (120/80).
Description : What is the normal blood sugar level of a human being? (1) Close to 10 mg/ml (2) 120 - 150 mg/dl (3) 80 - 90 mg/dl (4) 150 — 200 mg/dl
Last Answer : (2) 120 - 150 mg/dl Explanation: The blood sugar concentration or blood glucose level is the amount of glucose (sugar) present in the blood of a human or animal. The body naturally tightly regulates blood ... (termed "the fasting level"), and rise after meals for an hour or two by a few millimolar.
Description : What is the normal blood sugar level of a human being? (1) Close to 10 mg/ml (2) 120 – 150 mg/dl (3) 80 – 90 mg/dl (4) 150 – 200 mg/dl
Last Answer : 120 – 150 mg/dl
Description : your vehicle must have a horn which can be heard from a distance of _____ feet. -General Knowledge
Last Answer : Your vehicle must have a horn which can be heard from a distance of 200 feet.
Description : C fibres transmitting pain sensation a. are present in less numbers than A fibres in sensory nerves b. conduct at an average velocity of 2 metres/secon c. convey temperature sensation d. terminate in laminae 2 and 3 of the dorsal horn
Last Answer : convey temperature sensation
Description : Ambient noise level can be reduced by __________ decibels by planting trees (like coconut, neem etc.) near public utility buildings (like hospitals & schools). (A) 1-2 (B) 5-10 (C) 15-20 (D) 25-30
Last Answer : (B) 5-10
Description : Minimum stopping distance for moving vehicles on road with a design speed of 80 km/hour, is (A) 80 m (B) 100 m (C) 120 m (D) 150 m
Last Answer : Answer: Option C
Description : For transmission of power over a distance of 500 km, the transmission voltage should be in the range (a) 150 to 220 kV (b) 100 to 120 kV (c) 60 to 100 kV (d) 20 to 50 kV
Last Answer : (a) 150 to 220 kV
Description : 2 bus start from A & B respectively and travel towards each other at a speed of 150 km/hr and 120 km/hr respectively. By the time they meet, the first bus has travelled by 300km more than the second. The distance between A & B is a) 2700 b) 2800 c) 2750 d) 2457
Last Answer : A At the time of meeting, Let the distance travelled by the second bus be xkm Then distance covered by the 1st bus is (x+300)km x/120= (x+300) /150 150x = 120(x+300) 150x = 120x +36000 30x = ... X=36000/30 X=1200 So the distance covered between A & B =(x+x+300) =(1200+1200+300) =2700km.
Description : What does fifty decibels sound like?
Last Answer : A decibel is a measure of how loud a sound (any sound) is. 50 dBis about the sound level of gentle rainfall. Louder than a quietroom, softer than a quiet conversation. Not as loud as the dialtone on a telephone.
Description : Maximum permissible limit of industrial noise as recommended by World Health Organisation (WHO) is __________ decibels. (A) 35 (B) 75 (C) 95 (D) 105
Last Answer : (B) 75
Description : Major sources of noise in furnace operation arises from air inspirators, combustion, side wall vibrations and fluctuation in the process heat load. A 50% increase in fuel firing rate may increase the furnace noise level by about __________ decibels. (A) 3 (B) 30 (C) 7 (D) 70
Last Answer : (A) 3
Description : Noise level in a quiet private business office is about __________ decibels. (A) 25 (B) 50 (C) 70 (D) 85
Last Answer : (B) 50
Description : COD of raw municipal sewage may be in the range of about __________ mg/litre. (A) 1-2 (B) 5-10 (C) 90-120 (D) 1500-2500
Last Answer : (C) 90-120
Description : The distance between node and adjacent antinodes is 30 cm. The wavelength is - (1) 30 cm. (2) 90 cm. (3) 120 cm. (4) 60 cm.
Last Answer : (4) 60 cm. Explanation: A node is a point along a standing wave where the wave has minimal amplitude. The opposite of a node is an anti-node, a point where the amplitude of the standing wave is a maximum.
Description : The distance between node and adjacent antinode is 30 cm. The wavelength is (1) 30 cm. (2) 90 cm. (3) 120 cm. (4) 60 cm.
Last Answer : 60 cm.
Description : Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C. (A) 80 (B) 130 (C) 180 (D) 250
Last Answer : (B) 130