UPRVUNL AE flashcards
UPRVUNL AE · Build recall with a focused review session.
30 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Synchronous speed formula
- The speed of the rotating magnetic field in an AC machine equals 120 times frequency divided by number of poles, giving rpm when frequency is in hertz.
- Carnot efficiency
- Maximum possible efficiency of a heat engine operating between two reservoirs is one minus the ratio of absolute sink temperature to absolute source temperature.
- Op-amp virtual short
- With negative feedback and ideal op-amp assumptions, the inverting and non-inverting input voltages are treated as equal, and input currents are taken as zero.
- Wheatstone bridge balance
- The bridge is balanced, giving zero galvanometer current, when the ratio of two adjacent arms equals the ratio of the other two arms.
- Hoop stress thin cylinder
- Circumferential stress in a thin-walled cylindrical pressure vessel equals internal pressure times diameter divided by twice the wall thickness.
- Simply supported beam UDL moment
- For a simply supported beam carrying uniformly distributed load w over span L, maximum bending moment occurs at midspan and equals wL squared by eight.
- Strain gauge factor
- Gauge factor is the fractional change in resistance divided by the applied strain, typically about two for metallic foil strain gauges.
- BJT current gain beta
- Beta is the ratio of collector current to base current in a bipolar transistor, related to alpha by beta equals alpha divided by one minus alpha.
- UPRVUNL full form
- Uttar Pradesh Rajya Vidyut Utpadan Nigam Limited, the state-owned power generation company of Uttar Pradesh, headquartered at Lucknow.
- Article 32 of Constitution
- This article gives the right to move the Supreme Court directly for enforcement of Fundamental Rights, and is itself a Fundamental Right.
- Electricity Act 2003
- The law that restructured Indian electricity regulation, separating generation, transmission and distribution, and creating CERC and state electricity regulatory commissions.
- Chandrayaan-3 landing
- ISRO mission whose Vikram lander touched down near the lunar south pole in August 2023, making India the first country to land in that region.
- 42nd Amendment 1976
- Called the mini-Constitution, it added Fundamental Duties under Article 51A and inserted socialist, secular and integrity words into the Preamble.
- Seating arrangement facing centre
- When people sit in a circle facing the centre, a person's left is clockwise and their right is anticlockwise from their own position.
- Syllogism validity test
- A conclusion is valid only if it is true in every possible Venn diagram consistent with the given statements, not just one arrangement.
- Blood relation tree symbols
- Vertical lines connect parent to child across generations, horizontal lines connect siblings or spouses, and gender must be taken only from explicit clues.
- Number series difference method
- Subtract consecutive terms to get a first difference series; if constant it is arithmetic, if growing check squares, cubes or doubling patterns.
- दीर्घ संधि
- जब ह्रस्व या दीर्घ अ, इ, उ के बाद समान स्वर आए तो दोनों मिलकर दीर्घ हो जाते हैं, जैसे विद्या+आलय = विद्यालय।
- तत्पुरुष समास
- वह समास जिसमें उत्तर पद प्रधान होता है और पूर्व पद कारक चिह्न लुप्त होकर आता है, जैसे राजपुत्र = राजा का पुत्र।
- Subject-verb agreement rule
- Singular subjects like each, every, either and neither take singular verbs, and one of the plus plural noun also takes a singular verb.
- Third conditional structure
- Used for unreal past situations: if plus past perfect in the clause, and would have plus past participle in the main clause.
- मुहावरे का अर्थ
- मुहावरे का अर्थ उसके शब्दों के सीधे अर्थ से नहीं, बल्कि लाक्षणिक अर्थ से निकलता है, जैसे आँख का तारा = बहुत प्यारा।
- Binary to decimal conversion
- Multiply each binary digit by powers of two from right to left and add the results; for example 1011 equals eight plus zero plus two plus one.
- Volatile versus non-volatile memory
- RAM loses its stored contents when power is switched off, while ROM retains data permanently and is used for firmware and boot instructions.
- Average speed equal distances
- When two equal distances are covered at speeds x and y, average speed is twice the product divided by the sum, not the simple mean.
- Time and work combined
- If one worker finishes in a days and another in b days, working together they finish in a times b divided by a plus b days.
- Compound interest formula
- Amount after T years equals principal multiplied by one plus rate over hundred raised to power T, with interest being amount minus principal.
- IPv4 versus IPv6
- IPv4 addresses are 32 bits long written as four decimal octets, while IPv6 addresses are 128 bits written as eight hexadecimal groups.
- Successive discount formula
- Two successive discounts of a percent and b percent equal a single discount of a plus b minus ab divided by hundred percent.
- CI minus SI two years
- For two years, the difference between compound and simple interest equals principal multiplied by the square of rate divided by hundred.