Railway Board offers opulent and revered job posts to its aspirants. And it is not every year that we get the notification from Railway offering a good number of vacant seats to the multitude aspirants. But the current year 2018 brought a pleasant surprise with almost 1,20,000 seats to be filled by the valid candidates. Opportunity is here but you have to welcome it with a provident strategy.
रेलवे बोर्ड अपने उम्मीदवारों के लिए भव्य और प्रतिष्ठित कार्य पदों की पेशकश करता है. और हर साल ऐसा नहीं होता है कि हमें रेलवे की ओर से अधिसूचना मिलती है. लेकिन वर्तमान वर्ष 2018 आपके लिए बहुत सुखद वर्ष है क्योंकि इसमें लगभग 1,20,000 सीटों को वैध उम्मीदवारों द्वारा भरा जाएगा. आपके पास बहुत अच्छा अवसर है और आपको इसे एक बेहतर रणनीति से प्राप्त करना होगा.
Q1. Meter in a vehicle that calculates distance covered by the vehicle is called __________.
एक वाहन में मीटर जो वाहन द्वारा कवर दूरी की गणना करता है उसे __________ कहा जाता है
(a) Speedometer /स्पीडोमीटर
(b) Odometer/ओडोमीटर
(c) Thermometer /थर्मामीटर
(d) TDS metre /TDS मीटर
Ans.(b)
Sol. An odometer or odograph is an instrument for measuring the distance travelled by a vehicle, such as a bicycle or car. The device may be electronic, mechanical, or a combination of the two.
Sol. An odometer or odograph is an instrument for measuring the distance travelled by a vehicle, such as a bicycle or car. The device may be electronic, mechanical, or a combination of the two.
Q2. What is the SI unit of pressure?
दबाव की SI इकाई क्या है?
(a) Newton /न्यूटन
(b) Weber/वेबर
(c) Pascal /पास्कल
(d) Henry/हेनरी
Show Answer
Ans.(c)
Sol. The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2, or kg•m−1•s−2). This name for the unit was added in 1971. It is named after the French polymath Blaise Pascal.
Q3. The time taken by a pendulum to complete one oscillation is called its?Sol. The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2, or kg•m−1•s−2). This name for the unit was added in 1971. It is named after the French polymath Blaise Pascal.
एक परिसंचरण को पूरा करने के लिए एक पेंडुलम द्वारा लिया गया समय उसका क्या कहलाता है?
(a) Maximum speed/ अधिकतम गति
(b) Average speed/ औसत गति
(c) Time period/ समय सीमा
(d) Time interval/ समय अंतराल
Show Answer
Ans.(c)
Sol. The time taken by a pendulum to complete one oscillation is called its Time Period.
Sol. The time taken by a pendulum to complete one oscillation is called its Time Period.
Q4. If the weight of an object is 60 kgs, what will be its weight on the moon? (N=Newton)
यदि किसी वस्तु का वजन 60 किलोग्राम है, तो चंद्रमा पर इसका वजन क्या होगा? (N = न्यूटन)
(a) 60N
(b) 600N
(c) 100N
(d) 10N
Show Answer
Ans.(d)
Sol. If the weight of an object is 60 kg then mass on the moon = Mass of an object in earth/6 =60/6=10N.
Sol. If the weight of an object is 60 kg then mass on the moon = Mass of an object in earth/6 =60/6=10N.
Q5. The side mirrors of vehicles are of which type of mirrors?
वाहनों के किनारे दर्पण किस प्रकार के दर्पण हैं?
(a) Convex/ उत्तल
(b) Concave/ अवतल
(c) Plane/प्लेन
(d) Inverted/ उलटा
Show Answer
Ans.(a)
Sol. The convex mirror produces an upright image of any object and offers a wide viewing area as compared to the plane mirror. The usage of this type of mirror can be perceived on the car rear-view mirror, side-view mirror and even the motorcycles.
Sol. The convex mirror produces an upright image of any object and offers a wide viewing area as compared to the plane mirror. The usage of this type of mirror can be perceived on the car rear-view mirror, side-view mirror and even the motorcycles.
Q6. UV rays coming from Sun, majorly causes which cancer?
सूर्य से आने वाली यूवी किरणें, मुख्य रूप से किस कैंसर का कारण बनती हैं?
(a) Lungs cancer/फेफड़ों का कैंसर
(b) Liver cancer / यकृत कैंसर
(c) Mouth cancer/ मुंह कैंसर
(d) Skin cancer / त्वचा कैंसर
Show Answer
Ans.(d)
Sol. Ultraviolet (UV) radiation from the sun or sunbeds is the main cause of skin cancer.
Sol. Ultraviolet (UV) radiation from the sun or sunbeds is the main cause of skin cancer.
Q7. Which of the following is not a vector quantity?
इनमें से कौन एक उक्त रेखा (वेक्टर क्वांटिटी) नहीं है?
(a) Acceleration/ त्वरण
(b) Electric current/ विद्युत प्रवाह
(c) Force/बल
(d) Velocity/ वेग
इनमें से कौन एक उक्त रेखा (वेक्टर क्वांटिटी) नहीं है?
(a) Acceleration/ त्वरण
(b) Electric current/ विद्युत प्रवाह
(c) Force/बल
(d) Velocity/ वेग
Show Answer
Ans.(b)
Sol. It may seem that current is a vector because it have a magnitude and a direction. But the thing is, a vector always obey the law of addition of vectors. Since current doesn't obey it and it follows algebraic addition, current is a scalar.
Sol. It may seem that current is a vector because it have a magnitude and a direction. But the thing is, a vector always obey the law of addition of vectors. Since current doesn't obey it and it follows algebraic addition, current is a scalar.
Q8. The phenomena of raising the outer edge of the curved roads, above the inner edge to provide necessary centripetal force to the vehicles to take a safe turn is called _____.
एक सुरक्षित मोड़ लेने के लिए वाहनों को आवश्यक केंद्रिक बल प्रदान करने के लिए घुमावदार सड़कों के आंतरिक किनारे के ऊपर बाहरी किनारे को बढ़ाने की घटना को _____ कहा जाता है.
(a) Banking of roads/ सड़कों की बैंकिंग
(b) Cornering of roads/ सड़कों की कोर्नेरिंग
(c) Elevation of roads/सडकों का एलिवेशन
(d) Tempering of roads/सडकों का टेंपरिंग
एक सुरक्षित मोड़ लेने के लिए वाहनों को आवश्यक केंद्रिक बल प्रदान करने के लिए घुमावदार सड़कों के आंतरिक किनारे के ऊपर बाहरी किनारे को बढ़ाने की घटना को _____ कहा जाता है.
(a) Banking of roads/ सड़कों की बैंकिंग
(b) Cornering of roads/ सड़कों की कोर्नेरिंग
(c) Elevation of roads/सडकों का एलिवेशन
(d) Tempering of roads/सडकों का टेंपरिंग
Show Answer
Ans.(a)
Sol. The phenomenon of raising outer edge of the curved road above the inner edge is to provide necessary centripetal force to the vehicles to take a safer turn and the curved road is called Banking of Roads.
Sol. The phenomenon of raising outer edge of the curved road above the inner edge is to provide necessary centripetal force to the vehicles to take a safer turn and the curved road is called Banking of Roads.
Q9. For which of the following game, players must have the knowledge of Pascal's law?
निम्नलिखित में से किस खेल के लिए, खिलाड़ियों को पास्कल के सिद्धांत का ज्ञान होना चाहिए?
(a) Climbing/ चढ़ना
(b) Paragliding/ पैराग्लाइडिंग
(c) Rafting / राफ्टिंग
(d) Scuba diving/ स्कूबा डाइविंग
निम्नलिखित में से किस खेल के लिए, खिलाड़ियों को पास्कल के सिद्धांत का ज्ञान होना चाहिए?
(a) Climbing/ चढ़ना
(b) Paragliding/ पैराग्लाइडिंग
(c) Rafting / राफ्टिंग
(d) Scuba diving/ स्कूबा डाइविंग
Show Answer
Ans.(d)
Sol. Pascal's principle states that "a change in the pressure of an enclosed incompressible fluid is conveyed undiminished to every part of the fluid and to the surfaces of its container." For every 10m depth the pressure on the diver increases by 1 atm so at a depth of 10 meters under water, pressure is twice the atmospheric pressure at sea level. Thus, during Scuba diving players must have the knowledge of Pascal’s law.
Sol. Pascal's principle states that "a change in the pressure of an enclosed incompressible fluid is conveyed undiminished to every part of the fluid and to the surfaces of its container." For every 10m depth the pressure on the diver increases by 1 atm so at a depth of 10 meters under water, pressure is twice the atmospheric pressure at sea level. Thus, during Scuba diving players must have the knowledge of Pascal’s law.
Q10. What is the value of the Least Distance of Distinct vision (in cm) for a normal human being?
एक सामान्य इंसान के लिए स्पष्ट दृष्टि (सेमी में) की कम दूरी का मान क्या है?
(a) 2.5
(b) 25
(c) 58
(d) 60
एक सामान्य इंसान के लिए स्पष्ट दृष्टि (सेमी में) की कम दूरी का मान क्या है?
(a) 2.5
(b) 25
(c) 58
(d) 60
Show Answer
Ans.(b)
Sol. Least distance of distinct vision is defined as the minimum distance between the eye lens and the object to form a clear image. For a healthy human eye, the least distance of distinct vision is 25 cm, however it varies with age.
Sol. Least distance of distinct vision is defined as the minimum distance between the eye lens and the object to form a clear image. For a healthy human eye, the least distance of distinct vision is 25 cm, however it varies with age.
Q11. Who invented the Centigrade scale?
सेंटीग्रेड पैमाने का आविष्कार किसने किया?
(a) Anders Celsius / एंडर्स सेल्सियस
(b) Daniel Gabriel Fahrenheit/ डेनियल गेब्रियल फारेनहाइट
(c) William Thomson/ विलियम थॉमसन
(d) Wright Brothers/ राइट ब्रदर्स
सेंटीग्रेड पैमाने का आविष्कार किसने किया?
(a) Anders Celsius / एंडर्स सेल्सियस
(b) Daniel Gabriel Fahrenheit/ डेनियल गेब्रियल फारेनहाइट
(c) William Thomson/ विलियम थॉमसन
(d) Wright Brothers/ राइट ब्रदर्स
Show Answer
Ans.(a)
Sol. In 1742, Swedish astronomer, Anders Celsius invented the Celsius(Centigrade) temperature scale, which was named after the inventor.
Sol. In 1742, Swedish astronomer, Anders Celsius invented the Celsius(Centigrade) temperature scale, which was named after the inventor.
Q12. On which principle does the hydraulic lift works?
हाइड्रोलिक लिफ्ट किस सिद्धांत पर काम करती है?
(a) Newton's law/ न्यूटन का नियम
(b) Pascal's law/ पास्कल का नियम
(c) Archimedes's law/ आर्किमिडीज का सिद्धांत
(d) Joule's law/ जूल का नियम
हाइड्रोलिक लिफ्ट किस सिद्धांत पर काम करती है?
(a) Newton's law/ न्यूटन का नियम
(b) Pascal's law/ पास्कल का नियम
(c) Archimedes's law/ आर्किमिडीज का सिद्धांत
(d) Joule's law/ जूल का नियम
Show Answer
Ans.(b)
Sol. Pascal's Law states that pressure that is applied to an enclosed fluid is transmitted equally to all other points. A hydraulic pump is a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level. The hydraulic lift works because of Pascal’s law. If force is put on(according to Pascal’s Law), that force should be entirely felt on all points throughout the liquid.
Sol. Pascal's Law states that pressure that is applied to an enclosed fluid is transmitted equally to all other points. A hydraulic pump is a water pump that uses the kinetic energy of flowing water to force a small fraction of that water to a reservoir at a higher level. The hydraulic lift works because of Pascal’s law. If force is put on(according to Pascal’s Law), that force should be entirely felt on all points throughout the liquid.
Q13. The coil wire in the electric room heater or electric cooking heater is called __________.
इलेक्ट्रिक रूम हीटर या इलेक्ट्रिक कुकिंग हीटर में कॉइल तार को __________ कहा जाता है।
(a) Circuit/ सर्किट
(b) Element/एलीमेंट
(c) Filament/फिलामेंट
(d) Cells/सेल्स
इलेक्ट्रिक रूम हीटर या इलेक्ट्रिक कुकिंग हीटर में कॉइल तार को __________ कहा जाता है।
(a) Circuit/ सर्किट
(b) Element/एलीमेंट
(c) Filament/फिलामेंट
(d) Cells/सेल्स
Show Answer
Ans.(b)
Sol. The coil wire is heating element in electric room heater or electric cooking heater to converts electricity into heat through the process of resistive or Joule heating. Electric current passing through the element encounters resistance, resulting in heating of the element.
Sol. The coil wire is heating element in electric room heater or electric cooking heater to converts electricity into heat through the process of resistive or Joule heating. Electric current passing through the element encounters resistance, resulting in heating of the element.
Q14. Energy in the form of heat is wasted when a machine is operated. This heat is generated due to ___________.
जब एक मशीन संचालित की जाती है, तो ऊष्मा के रूप में ऊर्जा बर्बाद होती है/ यह ऊष्मा ___________ के कारण उत्पन्न होती है.
(a) Burning/ जलने
(b) Friction/ घर्षण
(c) Combustion/ दहन
(d) Lubrication/ स्नेहन
जब एक मशीन संचालित की जाती है, तो ऊष्मा के रूप में ऊर्जा बर्बाद होती है/ यह ऊष्मा ___________ के कारण उत्पन्न होती है.
(a) Burning/ जलने
(b) Friction/ घर्षण
(c) Combustion/ दहन
(d) Lubrication/ स्नेहन
Show Answer
Ans.(b)
Sol. Energy in the form of heat is wasted when a machine is operated. This heat is generated due to Friction between two parts.
Sol. Energy in the form of heat is wasted when a machine is operated. This heat is generated due to Friction between two parts.
Q15. The incident ray, the _________ at the point of incidence and the reflected ray all lie in the same plane.
आपतित किरणें, आपतित बिंदु पर _________ और परावर्तित किरणें सभी समान तल में स्थित होते हैं.
(a) Surface/ सतह
(b) Tangent/ स्पर्शरेखा
(c) Normal/ समान्य
(d) Angle of reflection/ परावर्तन कोण
आपतित किरणें, आपतित बिंदु पर _________ और परावर्तित किरणें सभी समान तल में स्थित होते हैं.
(a) Surface/ सतह
(b) Tangent/ स्पर्शरेखा
(c) Normal/ समान्य
(d) Angle of reflection/ परावर्तन कोण
Show Answer
Ans.(c)
Sol. The law of reflection states that the incident ray, the reflected ray, and the normal at the point of incidence all lie in the same plane.
Sol. The law of reflection states that the incident ray, the reflected ray, and the normal at the point of incidence all lie in the same plane.
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