MCQ
Which statement is incorrect?
- ACarnot cycle has the maximum efficiency in all cycles
- BCarnot cycle is a reversible one
- CReversible cycle has more efficiency than an irreversible one
- ✓All reversible cycles have same efficiency
✓
Answer
Correct option: D.
All reversible cycles have same efficiency
d
Efficiency of all reversible cycles depends upon temperature of source and sink which will be different.
Efficiency of all reversible cycles depends upon temperature of source and sink which will be different.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
A pendulum bob of mass $50 \,gm$ is suspended from the ceiling of an elevator. The tension in the string if the elevator goes up with uniform velocity is approximately .......... $N$
→A particle is moving with a constant speed $v$ in a circle. What is the magnitude of average velocity after half rotation
→A group of $N$ cells whose $emf$ varies directly with the internal resistance as per the equation $E_N = 1.5\, r_N$ are connected as shown in the figure below. The current $I$ in the circuit is ........... $amp$
→Figure shows the variation of a force $F$ acting on a particle along $x$-axis. If the particle begins at rest at $x=0$, what is the particle's coordinate when it again has zero speed?
→Two bodies of masses ${m_1}$ and ${m_2}$ are initially at rest at infinite distance apart. They are then allowed to move towards each other under mutual gravitational attraction. Their relative velocity of approach at a separation distance $r$ between them is
→The region between two concentric spheres ofradii '$a$' and '$b$', respectively (see figure), have volume charge density $\rho = \frac{A}{r}$ where $A$ is a constant and $r$ is the distance from the centre. At the centre of the spheres is a point charge $Q$. The value of $A$ such that the electric field in the region between the spheres will be constant, is :
→A dipole consisting of two charge $\pm q$ separated by a distance $2 a$ is placed with its centre $D$ away from the center of a grounded sphere of radius $R ( D > > a )$. When the dipole moment vector is perpendicular to the line joining the two centres (those of the dipole and sphere) the charge induced on the sphere is
→The magnetic flux linked with a vector area $\overrightarrow A $ in a uniform magnetic field $\overrightarrow B $ is
→The length and breadth of a metal sheet are $3.124\,m$ and $3.002\,m$ then area of sheet is
→A particle of mass $5 × 10^{-5}\ kg$ is placed at lowest point of smooth parabola $x^2$ = $40y$ ($x$ and $y$ in $m$) (in $rad/s$). If it is displaced slightly such that it is constrained to move along parabola, angular frequency of oscillation will be approximately
→